Thomas Cassels

Tom is a commercial litigator specialising in high stakes and crisis litigation, including public law and funded competition litigation. He is ranked in leading legal directories such as Chambers UK, Chambers Europe, Chambers Global and The Legal 500. He has won industry awards from the Lawyer and Legal Business and was twice included in The Lawyer “Hot 100”.

Tom works in close collaboration with lawyers from the firm’s other market-leading practice areas, including AFIG, Corporate, Projects and TMT in cross-office, multidisciplinary teams.

Chambers Review

Provided by Chambers

Chambers Guide to the Legal Profession

Administrative & Public Law - UK-wide

Band 1

Individual Editorial

Thomas Cassels is a dispute resolution partner at Linklaters. He is noted for his experience handling high-profile judicial reviews and public inquiries.

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Competition Law: Litigation - London (Firms)

Band 1

Individual Editorial

Thomas Cassels is well regarded for defending clients in competition damages claims, including acting in high-profile collective action proceedings. He also represents clients in challenges to CMA decisions and applications to strike out damages claims.

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Sport - UK-wide

Band 5

Individual Editorial

Thomas Cassels is a market-leading competition lawyer and commercial litigator with a sector specialism in sport. He is also instructed for disciplinary and regulatory matters.

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Strengths

Provided by Chambers

Tom is a top quality lawyer and he knows sports regulations inside and out.

Administrative & Public Law respondent
Chambers Guide to the Legal Profession

I have always found Tom to be absolutely brilliant.

Administrative & Public Law respondent
Chambers Guide to the Legal Profession

Tom Cassels is one of the best litigators. He has a combination of extremely good technical skills and pragmatism.

Administrative & Public Law respondent
Chambers Guide to the Legal Profession

Thomas Cassels is a very good leader and is immensely experienced and with a very good client following.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

Thomas Cassels is the best litigator I know; he is perhaps the strongest competition litigator in London.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

He offers clear, pragmatic and commercially-focused advice.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

I think Tom Cassels is a great strategic thinker in the context of complex antitrust litigation.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

Tom Cassels is outstanding and the best in class.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

Tom's reputation precedes him. Obviously he's an excellent lawyer, and he gives me advice that perhaps I would never have considered; he's really creative.

Sport respondent
Chambers Guide to the Legal Profession

Tom has an understated mastery of competition law and brings a level head and commercial realness to what are always fast-moving and high-pressured situations.

Sport respondent
Chambers Guide to the Legal Profession

He was standout good.

Sport respondent
Chambers Guide to the Legal Profession

Tom is a top quality lawyer and he knows sports regulations inside and out.

Administrative & Public Law respondent
Chambers Guide to the Legal Profession

I have always found Tom to be absolutely brilliant.

Administrative & Public Law respondent
Chambers Guide to the Legal Profession

Tom Cassels is one of the best litigators. He has a combination of extremely good technical skills and pragmatism.

Administrative & Public Law respondent
Chambers Guide to the Legal Profession

Thomas Cassels is a very good leader and is immensely experienced and with a very good client following.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

Thomas Cassels is the best litigator I know; he is perhaps the strongest competition litigator in London.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

He offers clear, pragmatic and commercially-focused advice.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

I think Tom Cassels is a great strategic thinker in the context of complex antitrust litigation.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

Tom Cassels is outstanding and the best in class.

Competition Law: Litigation respondent
Chambers Guide to the Legal Profession

Tom's reputation precedes him. Obviously he's an excellent lawyer, and he gives me advice that perhaps I would never have considered; he's really creative.

Sport respondent
Chambers Guide to the Legal Profession

Tom has an understated mastery of competition law and brings a level head and commercial realness to what are always fast-moving and high-pressured situations.

Sport respondent
Chambers Guide to the Legal Profession

He was standout good.

Sport respondent
Chambers Guide to the Legal Profession

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London (Firms)

Competition Law

Bruce Kilpatrick

Band 2

Thomas Cassels

UK Guide 2026

Administrative & Public Law + 2 more rankings

About

Practice Areas

Chambers Review

Chambers Guide to the Legal Profession

Administrative & Public Law - UK-wide

Individual Editorial

Competition Law: Litigation - London (Firms)

Individual Editorial

Sport - UK-wide

Individual Editorial

Strengths

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London (Firms)

Administrative & Public Law

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