Zac is sought-after as both junior and sole counsel across a wide range of practice areas, including commercial, data protection, defamation, employment, privacy, public, public international and sports law.

Zac is recommended in the legal directories in six of his practice areas: civil liberties and human rights; employment, data protection, defamation and privacy, public and administrative law and sport. He is recommended for:

  • His advocacy: “He is an excellent, confident advocate” (Chambers & Partners 2026); “He is one of the best cross-examiners in the business” (Legal 500 2025); “His advocacy skills are some of the best I’ve seen” (Chambers & Partners 2025);
  • His analytical ability: “Zac’s ability to analyse complex legal issues is incomparable.” (Chambers & Partners 2026); “Zac Sammour has a brilliant mind” (Chambers & Partners 2026); “Zac is an exceptional barrister. He is smart, insightful, thoughtful and tactically brilliant” (Legal 500 2026)
  • His ability to work in a team: “Zac has fantastic leader qualities in someone who is so junior. He ensures the team operate effectively and he really delivers with high-quality work” (Chambers & Partners 2026); “Zac is a brilliant tactician and works seamlessly with solicitor teams to provide timely pragmatic and commercial advice” (Legal 500 2026); “He is down to earth, bright, and speaks clear, simple English. He is commercial and pragmatic” (Chambers & Partners 2026).

Zac has appeared in high profile and complex cases in all of his practice areas, dealing with matters from free speech in the workplace (Miller v University of Bristol) to the regulation of online platforms (TikTok v ICO); arms exports during armed conflict (Al Haq v Secretary of State for Business and Trade) to large-scale team moves involving software copying and document misappropriation (SS&C v Zilo); and racism in sport (Yorkshire Cricket Disciplinary Proceedings) to the international obligations of occupying powers (ICJ advisory opinion proceedings).

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  • Quotation symbolZac is an exceptional barrister whose written work is very tightly drafted. He is an excellent, confident advocate.

    Quotation symbolChambers and Partners, 2026

  • Quotation symbolZac is an exceptional barrister. He is smart, insightful, thoughtful and tactically brilliant

    Quotation symbolLegal 500, 2026

  • Quotation symbolZac is amazing. He’s an absolute superstar

    Quotation symbolChambers & Partners, 2026

Expertise

ToggleCommercial and Business Protection

Zac accepts instructions in all areas of commercial dispute resolution. He is often instructed in disputes that intersect with his other areas of specialism, in technology disputes, or disputes arising out of the breakdown of shareholder, director or executive employment relationships.

Zac has extensive experience of commercial matters in the High Court at all stages of proceedings, from injunctive work through to trial and appeal. He has also been instructed in proceedings in the Dubai International Finance Centre (DIFC).

Zac also has experience of arbitration proceedings in partnership disputes.

  1. SS&C v Zilo

    (Chancery Division)

    Zac acts for SS&C, a global technology company, in a multi-party team move case involving allegations of employee solicitation, document misappropriation and software copying. Zac assisted SS&C in obtaining wide-ranging imaging order relief against the Defendants at the outset of the proceedings. The proceedings are ongoing. Zac is led by Jane McCaffery KC, together with colleagues from Hogarth Chambers, and is instructed by Allen Overy Shearmen Sterling.

  2. Baring Investment Services v Wheeler

    (KBD)

    Zac acts for Barings, one of the world’s largest asset managers, in a claim against the former Co-Head of Barings’ Global Private Finance Group. The claim alleges breaches of contract and fiduciary duties in connection with bonus payments paid by Barings to Wheeler and other employees who resigned in a coordinated fashion following payment of their bonuses and joined a competitor. Zac is led by Jane McCafferty KC and instructed by Dechert LLP.

  3. Brown & Brown v The Broker Investment Group Ltd & Ors

    (KBD)

    Zac acted for the Defendants, Broker Investment Group and 11 other Defendants in a team-move case in the insurance broker industry. The claim was listed for a speedy trial but settled before trial. Zac was led by Daniel Stilitz KC and instructed by DWF Law LLP.

  4. Sheikh Mohamed Bin Issa Al Jaber & Ors v Salfiti & Ors

    2008 EWHC 1583 (QB)

    Zac acted for five defendants in combined and complex multi-million-pound civil fraud proceedings involving allegations of identity theft, document manipulation, bribery and secret commissions. The claim settled at trial. Zac acted throughout the proceedings, and succeeded in discharging a freezing injunction obtained ex parte against Mr Salfiti with indemnity costs ordered in his client’s favor ([2018] 11 WLUK 46). Zac was led by Olivier Kalfon, of Maitland Chambers, and acted with Charles King (also of Maitland Chambers) and James Partridge (of 2TG).

  5. MBI International & Partners Inc (in Liquidation) v Sheikh Mohamed Bin Issa Al Jaber, Salfiti & Ors

    2008 EWHC 1583 (QB)

    Zac acted for Mr Salfiti in a cross-border insolvency claim for c.£250 million brought by the liquidator of a BVI company. The claim against Mr Salfiti was discontinued following the exchange of witness statements.

  6. Allen & Anr v Rabobank

    2008 EWHC 1583 (QB)

     Zac acts for the Claimants who seek indemnification from their former employer in respect of their legal costs in defending criminal proceedings arising out of the LIBOR scandal. The claim was the subject of an unsuccessful application for summary judgment ([2020] EWHC 1902 (Comm), in which Zac was led by Richard Leiper KC).

  7. Durlston Partners v Franco & Others 

    2008 EWHC 1583 (QB)

    Zac acted for the Claimant in a team move/breach of confidence case involving claims for breach of post-termination restraints, breaches of fiduciary duty, breaches of confidence and unlawful means conspiracy. Zac succeeded in obtaining undertakings over to a speedy trial (given at the hearing of the application for injunctive relief). The case was settled before trial. Zac was instructed by RWK Goodman.

  8. Rollingson v Hollingsworth & Ors

    2008 EWHC 1583 (QB)

    Zac acted for the Claimant in a team move case involving claims for breaches of contract, breaches of fiduciary duty, dishonest assistance, unlawful means conspiracy and inducement. The claim settled before trial, following an unsuccessful application by the Defendants for strike out and/or reverse summary judgment on significant aspects of the claim which raised interesting questions as to the scope of without prejudice privilege in the context of negotiations to acquire a right of action ([2020] EWHC 3568 (QB)). Zac was led by Richard Leiper KC and instructed by Lewis Silkin.

  9. Richard Pease v Henderson Administration Ltd

    2008 EWHC 1583 (QB)

    Zac acted for the claimant, an investment fund manager, who brought a claim against his former employers for breach of contract arising out of its failure to pay him c. £4 million in management fees and its failure to allow him to replace the manager of a £1 billion investment fund on termination of his employment. Mr Pease successfully defended Henderson’s counterclaim for c.£2 million in the High Court, a decision which was reversed on appeal to the Court of Appeal. Zac was led in both the High Court and Court of Appeal by Richard Leiper KC, and instructed by Michelmores.

Download Commercial Litigation CV

ToggleEmployment

Zac regularly appears as sole counsel in the Employment Tribunals and Employment Appeal Tribunal in high value and complex claims. Zac has particular experience in whistleblowing and discrimination claims, and an interest in cases involving discrimination on grounds of belief.

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  • Zac is an exceptional barrister whose written work is very tightly drafted. He is an excellent, confident advocate.

    Chambers and Partners, 2026

  • Zac is carving out a name for himself at the forefront of discrimination law.

    Legal 500, 2026

  • A real fighter, a deadly weapon, and someone you most certainly want in your corner.

    Legal 500, 2025

  1. Miller v University of Bristol.

    2008 EWHC 1583 (QB)

    Zac acts for Professor David Miller in a high profile claim against the University of Bristol in which Professor Miller alleges discrimination on grounds of his holding anti- Zionist beliefs. An appeal to the EAT is due to be heard in 2025.

  2. Beldica v British Council

    2008 EWHC 1583 (QB)

    Zac acted for the British Council in its successful appeal to the EAT in a case concerning the interplay between the ET’s jurisdiction, the Human Rights Act and the law of diplomatic immunity.

  3. Rustambekov v Fieldfisher

    2008 EWHC 1583 (QB)

    Zac acts for Filedfisher in a claim concerning alleged sexual misconduct by a senior associate. Fieldfisher has been granted permission to appeal to the EAT. The appeal is due to be heard in 2026.

  4. Gale & Ors v Yorkshire Cricket Club

    2008 EWHC 1583 (QB)

    Zac acted for Yorkshire Cricket Club in relation to high profile claims for unfair dismissal, victimization and (in two cases) race discrimination brought by former coaches of Yorkshire Cricket Club who were dismissed by the Club in connection with the widely publicised allegations of racial discrimination and harassment made by former player Azeem Rafiq. Zac was successful in obtaining deposit orders in relation to claims of racial discrimination. All claims were settled before trial.

  5. Thompson v Informatica

    2008 EWHC 1583 (QB)

    Zac acted for the Respondent in both the Employment Tribunal and the EAT. Before the ET, the Respondent successfully defended a whistleblowing and ordinary unfair dismissal claim brought by a senior executive who had been dismissed for breaching the employer’s anti-bribery and corruption policies. The trial was heard over 6 days. The Claimant appealed the dismissal of his unfair dismissal claim to the EAT. That appeal was dismissed.

  6. Fleming v East of England Ambulance Service NHS Trust

    2008 EWHC 1583 (QB)

    Zac acted for the appellant, who successfully challenged a decision of the Employment Tribunal to exclude his covert recording of the private discussions of a disciplinary panel. The EAT ruled that the recordings were admissible, except those parts that were caught by legal professional privilege (led by Jane McCafferty, instructed by Steeles Law).

Download Employment CV

ToggleData Protection and Information

Zac has acted in a number of high profile data protection disputes.

Zac has appeared, both as sole and junior counsel, in a number of information law cases, including Galloway v Information Commissioner (2017) and All Party Parliamentary Group on Drones v ICO and Ministry of Defence (2017) (led by Timothy Pitt-Payne KC). He has also advised on a range of data protection issues, and has appeared in the county court in data protection matters.

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  • He’s incredibly clever. He sees the arguments others do not.

    Chambers and Partners, 2024

  • He has a formidable intellect, he’s dynamic and he is a good team player. He is a proven performer. The written work is excellent in terms of results he achieves.

    Chambers and Partners, 2024

  • He’s excellent and very user-friendly. Clever, thoughtful and hardworking. A go-to junior for data protection.

    Legal 500, 2025

  1. Whyte v CBS Interactive Inc & Anr

    2008 EWHC 1583 (QB)

    (Media and Communications List), a privacy claim by the well- known boxer Dillian Whyte arising out of the publication of an article discussing Mr Whyte testing positive for a banned substance in advance of a high profile fight. Zac acts for the Defendants (led by Anya Proops KC, instructed by Howard Kennedy).

  2. Newman v Southampton City Council

    [2020] EWHC 2103

  3. Facebook v Information Commissioner

    (EA/2018/0256)

Download Data Protection and Information CV

ToggleDefamation and Privacy

Zac has a developed a vibrant practice in defamation and privacy work. He is regularly instructed in cases with a data protection or employment overlap, and in traditional media and privacy disputes.

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  • Zac’s advice is spot-on and his advocacy skills are some of the best I have seen.

    Chambers & Partners

  • Zac is an exceptional barrister. He is smart, insightful, thoughtful and tactically brilliant

    Legal 500, 2026

  • Zac has an excellent grasp of the law across a number of areas; he is an all-round barrister that is commercial and a pleasure to work with.

    Chambers & Partners

  1. Gorgianeh v Baroness Foster

    2008 EWHC 1583 (QB)

    Zac acted in high profile proceedings brought by a student who appeared on University Challenge with a soft toy mascot which Baroness Foster stated on Twitter had been an antisemitic symbol. The claim settled with a public apology from the Baroness, and was widely reported. Zac was instructed by Rahman Lowe.

  2. Oldknow v Evans

    2008 EWHC 1583 (QB)

    Zac acted for the Labour Party in high- profile defamation proceedings brought by a former senior Labour Party official in connection with allegations made in a leaked internal report concerning the Labour Party’s handling of anti-semitism complaints (led by Anya Proops KC, instructed by Greenwoods GRM).

  3. Whyte v CBS Interactive Inc & Anr

    2008 EWHC 1583 (QB)

    (Media and Communications List), a privacy claim by the well- known boxer Dillian Whyte arising out of the publication of an article discussing Mr Whyte testing positive for a banned substance in advance of a high profile fight. Zac acts for the Defendants (led by Anya Proops KC, instructed by Howard Kennedy).

Download Defamation and Privacy CV

TogglePublic

Zac has a broad public law practice, and has appeared in a number of claims for judicial review. His work encompasses human rights, local government, asylum and constitutional law.

Zac has also acted in a number of other cases over the years, including: (R on the application of Tirkey) v the Lord Chancellor & the Director of Legal Aid Casework [2017] EWHC 3403, a challenge to the operation of the statutory charge (led by Peter Oldham KC, instructed by the Anti-Trafficking and Labour Exploitation Unit); Leicester City Council in R (on the application of Jewish Human Rights watch) v Leicester City Council in both the High Court ([2016] EWHC 1512 (Admin)) and the Court of Appeal ([2018] EWCA Civ 1551), a challenge to a resolution of the Council calling for a boycott of goods produced in Israeli settlements in the Occupied Palestinian The Council successfully defended that claim in the Divisional Court and in the Court of Appeal (led by Andrew Sharland KC), and Gulf Center for Human Rights v the Prime Minister in both the High Court ([2016] EWHC 1323 (Admin)) and the Court of Appeal ([2018] EWCA Civ 1855), a challenge against changes to the Ministerial Code (led by Jason Coppell KC and Hannah Slarks, instructed by Deighton Pierce Glynn).

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  • Zac is invaluable in high-level work.

    Chambers & Partners, 2026

  • Zac has fantastic leader qualities in someone who is so junior. He ensures the team operate effectively and he really delivers with high-quality work.

    Chambers & Partners, 2026

  1. Al Haq v Secretary of State for Business and Trade

    2008 EWHC 1583 (QB)

    Zac acted for Al Haq in its challenge to the SSBT’s decision not to suspend arms licenses for the supply of F-35 parts to Israel during the ongoing war in Gaza. Zac undertook the oral advocacy at the hearing before the Divisional Court on the Geneva Conventions, Genocide Convention and Articles of State Responsibility.

  2. GB News v Ofcom

    2008 EWHC 1583 (QB)

    Another of the Lawyer’s top 20 cases of 2025. Zac acts for Ofcom in a judicial review challenge to the lawfulness of its finding that GB News breached the Broadcasting Code in relation to its broadcasting of a “People’s Forum” programme featuring the then Prime Miniser, Rishi Sunak. Zac is led by Anya Proops KC.

  3. Diaspora Alliance v Secretary of State for Education

    2008 EWHC 1583 (QB)

    Zac acts for the Claimant in a challenge to the SSE’s decision to adopt the IHRA working definition of antisemitism as the cornerstone of a proposed training programme for schools, colleges and universities, without making proper provision for the protection of free speech and equality obligations. The claim is currently stayed.

  4. Bouchti v Enfield LBC

    2008 EWHC 1583 (QB)

    Zac acted for the Claimant in a statutory review of orders providing for a lower traffic neighborhood in Enfield. The claim was dismissed by Eyre J in November 2022. Zac was led by Clive Sheldon KC.

  5. R (on the application of Tax Returned Ltd) v Revenue and Customs Commissioners

    2008 EWHC 1583 (QB)

    Zac acted for the Claimants in a challenge to the adoption of a new mandatory form for claims for PAYE tax relief. The Claimants obtained permission for their claim following a contested hearing in September 2022, in which the Court granted retrospective permission for service of the Claim Form by alternative means (judgment of Heather Williams J, [2022] BTC 29. Zac is led by Joanna Clement KC, and instructed by Hill Dickinson.

  6. R (on the application of the Palestine Solidarity Campaign) v Secretary of State for Communities and Local Government in the High Court

    2008 EWHC 1583 (QB)

    Zac acted for the Claimant in a challenge to guidance from the defendant Secretary of State which sought to prohibit the administering authorities of the local government pension schemes from adopting policies of boycott, divestment and sanction against foreign nations (led by Nigel Giffin KC, instructed by Bindmans). The Supreme Court held that the challenged part of the guidance was contrary to the Padfield principle.

  7. Good Law Project v Secretary of State for Health and Social Care

    2008 EWHC 1583 (QB)

    Acting for the Claimant in a challenge to the lawfulness of the Secretary of State’s award of a number of high value contracts for the supply of PPE during the Covid-19 pandemic. The claim raised important questions as to the scope of the duties of equal treatment and transparency in the context of contracts awarded under regulation 32 of the PCR 2015, and resulted in a number of judgments on matters of procedure ([2021] 5 WLUK 226; [2021] 5 WLUK 316). Judgment on the substantive challenge is awaited.

Download Public CV

TogglePublic International

Zac has extensive experience dealing with public international law issues in both domestic and international courts and tribunals.

Zac was involved in human rights litigation conducted in a key African jurisdiction which raised a number of important public international law and human rights law issues, and which ended successfully for his client at appellate level.

  1. Advisory Opinion proceedings concerning the consequences of Israel’s occupation.

    2008 EWHC 1583 (QB)

    Zac acted for Palestine in advisory proceedings before the ICJ concerning the legal consequences arising from Israel’s occupation of the West Bank, including East Jerusalem, and the Gaza Strip. Zac was led by Philippe Sands KC and Paul Reichler, together with colleagues from outside of chambers.

  2. Advisory Opinion proceedings concerning the obligations of Israel in relation to the presence and activities of the UN, International organisations and Third States in the Occupied Palestinian Territory.

    2008 EWHC 1583 (QB)

    Zac acted for Palestine in advisory proceedings before the ICJ concerning the legal obligations of Israel with respect to the UN, international organisations and third states in the Occupied Palestinian Territories. The hearings took place in May 2025. Zac was led by Paul Reichler.

  3. Venezuela v Guyana

    2008 EWHC 1583 (QB)

    Zac acts for Guyana in contentious proceedings before the ICJ concerning the boundary between it and Venezuela. Zac is led by Paul Reichler and Phillippe Sands KC, again working with a number of colleagues within and outside of chambers.

  4. Al Haq v Secretary of State for Business and Trade

    2008 EWHC 1583 (QB)

    Zac acted for Al Haq in its challenge to the SSBT’s decision not to suspend arms licenses for the supply of F-35 parts to Israel during the ongoing war in Gaza. Zac undertook the oral advocacy at the hearing before the Divisional Court on the Geneva Conventions, Genocide Convention and Articles of State Responsibility.

  5. Belidca v British Council

    [2024] EAT 92

Download Public International CV

ToggleProcurement / Competition

Zac acted for the Claimant in Serco v Secretary of State for Defence , a large and complex procurement challenge relating to a substantial contract worth c. £1billion. The claim settled before trial, and following a successful application by the Claimant for specific disclosure (on which the Claimant was awarded its costs on the indemnity basis: [2019] EWHC 515 (TCC)) and an unsuccessful application by the Defendant for strike out ([2019] EWHC 549 (TCC)). Zac acted for Serco throughout the proceedings, led by Joseph Barrett and instructed by DWF.

Zac has also acted as both junior and sole counsel in a number of other procurement matters. He acted for Camelot in an interlocutory hearing before O’Farell J in the IGT v Gambling Commission litigation ([2023] EWHC 1420 (TCC)).

Zac also has experience in competition law. He acted for the Claimant in Balmoral Tanks Limited v CMA in both the CAT ([2017] CAT 23) and the Court of Appeal ([2019] 4 CMLR 25; [2019] EWCA Civ 162)), the first decision of the UK courts on information exchange infringements.

Zac has experience with EU law issues outside of the context of procurement and competition law. Zac acted for a claimant in a claim for judicial review which argued that guidance issued by the Secretary of State was contrary to the IORP Directive R (on the application of the Palestine Solidarity Campaign) v Secretary of State for Communities and Local Government (led by Nigel Giffin KC).

During pupillage, Zac gained extensive experience on competition cases, including Sky v Ofcom [2015] CAT 9 (assisting David Scannell) and Speed Medical Examination Services v Secretary of State for Justice [2015] EWHC 3585, a judicial review challenging reforms to the process for handling soft tissue whiplash claims on the basis (inter alia) that they gave rise to breaches of competition law (assisting Gerard Rothschild).

Zac also gained experience during pupillage in the following areas:

  •  EU sanctions;
  •  The Common Agricultural Policy and;
  •  Challenges to decisions of the European Medicines Agency.

Download Procurement CV

ToggleSport

‘Zac is a go-to for sports work, not least his skillset within the fields of employment, data protection and litigation. Very easy to work with, client friendly and helps clients to navigate choppy waters. Extremely bright and outshines a lot of more senior barristers. Diligent, always thoroughly prepared, he wipes the floor with his opponents. Zac is a brilliant tactician and works seamlessly with solicitor teams to provide timely pragmatic and commercial advice.’ (Legal 500, Sport 2026)

‘Brilliant mind with a good eye for detail. Works very hard – prepares assiduously.’ (Legal 500, Sports Law 2024)

Zac has also advised in relation to disciplinary proceedings in tennis.

  1. ECB v Yorkshire Cricket Club & Ors

    2008 EWHC 1583 (QB)

    Zac acts for Yorkshire Cricket Club in relation to ongoing disciplinary proceedings before the Cricket Discipline Commission. He also acts for Yorkshire in proceedings in the High Court.

  2. Zverev v Ace Group International

    2008 EWHC 1583 (QB)

    Zac acted for the Claimant, a prominent tennis player, in his dispute with his former manager. Mr Zverev alleged that his representation agreement with his manager was an unenforceable restraint of trade, and sought declaratory relief to that effect. The claim settled at trial (led by Anya Proops KC, instructed by Howard Kennedy).

  3. Whyte v CBS

    2008 EWHC 1583 (QB)

    Zac acts for the Defendant to a claim brought by high-profile boxer, Dillian Whyte. The claim raises issues as to the confidentiality and privacy of anti-doping tests undertaken by professional athletes.

  4. The Football League v Wigan Athletic Football Club

    2008 EWHC 1583 (QB)

    Zac acted for the EFL in disciplinary proceedings against Wigan Athletic arising out of the Club’s failure to pay wages as they fell due.

Download Sport CV

ToggleRecent cases

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  1. TikTok v ICO

    [2025] UKFTT 798 (GRC)

  2. R (on the application of Al Haq) v Secretary of State for Business and Trade

    [2025] EWHC 1615 (Admin)

  3. Ashley v Revenue and Customs Commissioners

    [2025] EWHC 134 (KB)

  4. R (on the application of GB News Ltd) v Office of Communications [2024] EWHC 2658

    [2024] EWHC 2658

  5. Legal consequences arising from Israel’s occupation of the West Bank, including East Jerusalem, and the Gaza Strip (ICJ)

  6. Belidca v British Council

    [2024] EAT 92

  7. Jones Nickolds v Pearce

    [2024] EWHC 1793 (KB)

  8. International Game Technology plc & Others v the Gambling Commission

    [2023] EWHC 1420

  9. Taylor v Evans

    [2023] EWHC 935 (KB)

  10. Bouchti v Enfield

    [2022] EWHC 2809

  11. R (on the application of Tax Returned) v Revenue and Customs Commissioners

    [2022] EWHC 2514

  12. Smith v TalkTalk

    [2022] EWHC 1311

  13. SMO v TikTok Inc

    [2022] EWHC 489

  14. Thompson v Informatica Software Ltd

    [2021] 10 WLUK 171

  15. Various Claimants v Independent Parliamentary Standards Authority

    [2021] EWHC 2020 (QB)

  16. Good Law Project v Secretary of State for Health and Social Care

    [2021] 5 WLUK 226

  17. Newman v Southampton City Council

    [2021] 1 WLR 2900

  18. Oldknow v Evans

    [2021] EWHC 1028 (QB)

  19. Rollingson v Hollingsworth

    [2020] EWHC 3568 (QB)

  20. Facebook v Information Commissioner

    (EA/2018/0256)

  21. Newman v Southampton City Council

    [2020] EWHC 2103

  22. Allen v Co-operative Rabobank UA

    [2020] EWHC 1902 (Comm)

  23. Serco v Secretary of State for Defence

    [2019] EWHC 549 (TCC) & [2019] EWHC 515 (TCC)

  24. R (on the application of Jewish Human Rights watch) v Leicester City Council

    High Court [2016] EWHC 1512 (Admin) Court of Appeal [2018] EWCA Civ 1551

  25. R (on the application of the Palestine Solidarity Campaign) v Secretary of State for Communities and Local Government

    High Court [2017] EWHC 1502 (Admin); Court of Appeal [2018] EWCA Civ 1284 and Supreme Court; [2020] UKSC 16; [2020] 1 WLR 1774

  26. Richard Pease v Henderson Administration Ltd

    [2018] EWHC 661; [2019] EWCA Civ 158

  27. Balmoral Tanks Limited v CMA

    [2017] CAT 23; [2019] EWCA Civ 162

     

Download Recent cases CV

Achievements

ToggleEducation

London School of Economics, LLB (First Class)

Oxford University, BCL (Distinction)

ToggleAwards

  • Sweet and Maxwell Prize for Best Performance in final year exams (LSE)
  • Clifford Chance Prize for Best Performance in Property II (LSE)
  • Archibald Jackson Prize (Somerville College, Oxford)
  • Denning Scholarship (Lincolns Inn)
  • Hardwicke Entry Award (Lincolns Inn)

ToggleOther

Zac enjoys combat sports and competed for several years at an amateur level in boxing and Muay Thai. Zac competed for Oxford in the 2013 Varsity Match, where he beat the Cambridge captain and won Oxford’s award for Best Technical Boxer. He now competes (recreationally) in Brazilian Jiu Jitsu. He is a fan of Newcastle United FC.

Insights&News

  1. News

    15 members of 11KBW recognised in Doyle’s Guide London rankings

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  2. News

    9 members of chambers included in the Pro Bono Recognition List for 2026

    View News

  3. News

    James Goudie KC and Zac Sammour shortlisted for 2026 Bar Pro Bono Awards

    View News

  4. News

    Judgment handed down by the High Court in Guy Carpenter v Willis Re and others

    View News

  5. News

    Appointments to the Attorney General’s Public International Law Panel

    View News

  6. News

    PFEW settles claims following cyber-attacks

    View News

  7. News

    11KBW shortlisted for 14 Awards at the Legal 500 UK Bar Awards 2025

    View News

  8. News

    11KBW members act for Palestine in ICJ advisory proceedings on Israel’s aid obligations

    View News

View more →

  • Quotation symbol

    An excellent advocate who demonstrates abilities well beyond his year of call. Both a razor-sharp mind and a natural manner with clients. A barrister who solicitors always trust to do a good job – a real star of the employment Bar

    Legal 500, Employment, 2022

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    Zac is exceptionally bright, has an incredible work ethic and demonstrates abilities well beyond his year of call. Zac is a complete star and absolutely someone you want on your team

    Legal 500, Data Protection, 2023

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    He does an excellent job and is very bright

    Chambers & Partners, Employment, 2021

  • Quotation symbol

    Zac is very flexible and will go the extra mile. He really thinks outside the box and is incredibly imaginative but has a down-to-earth demeanor

    Chambers & Partners, Employment, 2024

  • Quotation symbol

    Zac provides an excellent level of service for us in complex tribunal cases

    Chambers & Partners, Employment, 2024

  • Quotation symbol

    Zac is responsive, has great attention to detail, puts clients at ease and has strong advocacy skills

    Legal 500, Employment, 2024

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    Brilliant mind with a good eye for detail. Works very hard – prepares assiduously

    Legal 500, Sports Law, 2024

  • Quotation symbol

    Zac’s cross-examination approach is tenacious and gives confidence that he is in complete control of the witness on the stand. His submissions are well crafted without being unnecessarily verbose; and he is excellent at managing lay clients, ensuring they feel involved and understand what is happening

    Legal 500, Employment, 2023

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    Zac is very personable and is a very strong team player. He has a first-class knowledge and intellect and is very good on paper. He is a superb advocate and is definitely a junior star

    Legal 500, Defamation and Privacy, 2023

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    Zac Sammour is a phenomenal lawyer with incredible commercial acumen

    Chambers & Partners, Data Protection, 2023

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    Zac is technically really good, great on his feet and great before a tribunal

    Chambers & Partners, Employment, 2023

  • Quotation symbol

    He’s a superb barrister, who gets up to speed very quickly with the issues in the case and has a very thorough, detailed knowledge of the law

    Chambers & Partners, Employment, 2021

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    Forensic in his examination of the brief, and does not let anything go or leave any stone unturned. A rising star

    Chambers & Partners, Data Protection, 2021

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    Absolutely outstanding

    Legal 500, Data Protection, 2021

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    An all-round intellectual and practical talent, a future star of the bar and a pleasure to work with

    Legal 500, Data Protection, 2022

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    He is very impressive: he gets straight to the point and is a very effective cross-examiner

    Chambers & Partners, Employment, 2022

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    He is excellent on paper, offering a thorough review of relevant law, and he makes cogent oral submissions which effectively bring out the strength of his case

    Chambers & Partners, Employment, 2022

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    He’s a very responsive barrister, who is hard-working and easy to work and deal with

    Chambers & Partners, Data Protection, 2022

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    Invaluable on every case we’ve worked on with him. A star junior

    Chambers & Partners, Data Protection, 2022

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    Zac is a go-to for sports work, not least his skillset within the fields of employment, data protection and litigation. Very easy to work with, client friendly and helps clients to navigate choppy waters. Extremely bright and outshines a lot of more senior barristers. Diligent, always thoroughly prepared, he wipes the floor with his opponents. Zac is a brilliant tactician and works seamlessly with solicitor teams to provide timely pragmatic and commercial advice

    Legal 500, Sport, 2026

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    A formidable junior counsel

    Legal 500, Data Protection, 2024

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    He is a tenacious advocate: very effective in his cross-examination and submissions

    Chambers & Partners, Employment, 2024

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    He has a formidable intellect, he’s dynamic and he is a good team player. He is a proven performer. The written work is excellent in terms of results he achieves

    Chambers & Partners, Data Protection, 2024

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    He’s pragmatic and happy to get into the weeds. He’s a strategic thinker and has good judgement for his years

    Chambers & Partners, Data Protection, 2024

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    He’s incredibly clever. He sees the arguments others do not

    Chambers & Partners, Data Protection, 2024

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    Zac has a super brain that is always ticking. He is one of the best cross-examiners in the business. He is exceptional in every area

    Legal 500, Defamation and Privacy, 2025

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    He is down to earth, bright, and speaks in clear, simple English. He is commercial and pragmatic

    Chambers & Partners, Data Protection, 2026

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    Zac is excellent

    Chambers & Partners, Data Protection, 2026

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    Zac is carving out a name for himself at the forefront of discrimination law

    Legal 500, Employment, 2026

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    Zac is a ‘go-to’ junior for complex human rights and employment cases

    Chambers & Partners, Employment, 2026

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    Zac is an exceptional barrister whose written work is very tightly drafted. He is an excellent, confident advocate

    Chambers & Partners, Employment, 2026

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    Zac Sammour is an impressive advocate who is able to demonstrate an impressive range of cross-examination approaches to fit any situation

    Chambers & Partners, Employment, 2026

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    A real fighter, a deadly weapon, and someone you most certainly want in your corner

    Legal 500, Employment, 2025

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    Zac is immeasurably smart and spots issues well before they arise

    Chambers & Partners, Employment, 2025

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    Zac is extremely sharp and insightful, and his drafting is superb

    Chambers & Partners, Employment, 2025

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    Zac is an excellent and sharp advocate

    Chambers & Partners, Employment, 2025

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    Zac is great with clients and advises on the most complex aspects of law in concise and user-friendly terms

    Chambers & Partners, Data Protection, 2025

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    He’s excellent and very user-friendly. Clever, thoughtful and hardworking. A go-to junior for data protection

    Legal 500, Data Protection, 2025

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    Zac’s advice is spot-on and his advocacy skills are some of the best I have seen

    Chambers & Partners, Defamation and Privacy, 2025

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    Zac is very pragmatic, easy to deal with and clients trust him

    Chambers & Partners, Defamation and Privacy, 2025

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    Zac’s ability to analyse complex legal issues is incomparable

    Chambers & Partners, Civil Liberties & Human Rights, 2026

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    Zac is very bright, capable and easy to engage with. He is very strong technically

    Chambers & Partners, 2026

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    Zac is an impressive advocate – he is clear and persuasive and knows what points to run. He is also exceptional on paper and has very good judgment

    Legal 500, Data Protection, 2026

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    Zac is an exceptional barrister. He is smart, insightful, thoughtful and tactically brilliant

    Legal 500, Defamation and Privacy, 2026

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    Zac has an excellent grasp of the law across a number of areas; he is an all-round barrister that is commercial and a pleasure to work with

    Chambers & Partners, Defamation and Privacy, 2026

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    Zac is invaluable in high-level work

    Chambers & Partners, Public and Administrative, 2026

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    Zac has fantastic leader qualities in someone who is so junior. He ensures the team operate effectively and he really delivers with high-quality work

    Chambers & Partners, Public and Administrative, 2026

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    Zac Sammour has a brilliant mind

    Chambers & Partners, Civil Liberties & Human Rights, 2026

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    Zac Sammour is an absolutely outstanding opponent with a stellar future ahead of him

    Chambers & Partners, Civil Liberties & Human Rights, 2026