LAWYER PROFILE

Keith Mathieson

UK 2026

RPC

Ranked in 2 practice areas

Defamation/Reputation Management

UK-wide

18 years ranked

Media & Entertainment: Publishing

UK-wide

9 years ranked

About

Provided by RPC

Practice Areas

An expert in defamation and privacy law, Partner Keith Mathieson has been defending the media for over 20 years and leads RPC's media team.

Keith defends clients involved in libel, privacy and similar claims.

Regularly instructed by Associated Newspapers Limited (Mail, Mail on Sunday and Mail Online), Mirror Group, News UK (The Sun, Times and Sunday Times) and the Financial Times, he also acts for numerous other UK and international publishers and for a number of media liability insurers.

Keith has had a prominent role in press regulation, including acting for Associated Newspapers throughout the Leveson Inquiry.

He is currently representing Mirror Group in the long-running litigation arising out of phone hacking at its three titles. He has particular experience of contentious costs matters in media cases.

Career

Trained Lovells; qualified 1983; solicitor Lovells 1983-90; solicitor Oswald Hickson Collier 1990-92; partner 1992-97; partner Davies Arnold Cooper 1997-2000; partner Reynolds Porter Chamberlain 2000.

Publications

Principal author and editor of The Privacy Law Handbook.

Contributed to The Freedom of Information Handbook, 3rd edition.

Chambers Review

Provided by Chambers

Chambers Guide to the Legal Profession

Defamation/Reputation Management - UK-wide

Star Individuals

Individual Editorial

Keith Mathieson is a partner in the media team with a wealth of experience in this space. He is regularly called upon to defend media sector clients, including leading newspapers and publishers, against allegations of defamation. He has a wide international client base and has acted in some of the most high profile media cases in recent decades.

Learn more about this team View ranking table

Media & Entertainment: Publishing - UK-wide

Band 2

Individual Editorial

Keith Mathieson is an experienced litigator with specialist expertise in news media regulation, freedom of information and data protection. He is frequently called upon to provide pre-publication and content clearance advice to national newspapers, magazines and book publishers.

Learn more about this team View ranking table

Strengths

Provided by Chambers

Keith knows our brand inside out and knows exactly what advice to give us.
Defamation/Reputation ManagementChambers Guide to the Legal Profession
Keith is a formidable media lawyer.
Defamation/Reputation ManagementChambers Guide to the Legal Profession
Keith is a born god.
Defamation/Reputation ManagementChambers Guide to the Legal Profession
Keith was immediately was on top of the legal complexities of the case and the best approach to the our interests effectively.
Defamation/Reputation ManagementChambers Guide to the Legal Profession
Keith’s reputation as a superb media lawyer is well deserved in our opinion. He is vastly knowledgeable, practical, and a lovely person to work with.
Media & Entertainment: PublishingChambers Guide to the Legal Profession
Keith our first choice with difficult media litigation.
Media & Entertainment: PublishingChambers Guide to the Legal Profession