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Keith Mathieson

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Partner. An expert in defamation and privacy law, Keith Mathieson has been defending the media for over 20 years and leads RPC's media team. He specialises in media litigation, particularly defamation, copyright and freedom of information; and acts for national and regional newspapers, magazines, broadcasters, book publishers and media liability insurers.

Publications of note: editor of the Law Society’s ‘Privacy Law Handbook’.


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.


Glasgow Academy; Gonville and Caius College, Cambridge (1980 MA Law); King’s College, London (1997 Diploma in UK and European Law of Copyright).

London: Risk advisory

Data protection privacy and cybersecurity

Within: Data protection privacy and cybersecurity

The data and privacy practice at RPC is jointly headed up by  Oliver Bray and Keith Mathieson who focus on non-contentious and contentious issues respectively. A 'very experienced and capable litigator', Mathieson is defending Associated Newspapers in several data protection disputes, and acted alongside recently promoted partner Nicola Cain for Media Lawyers Association to draft responses to the government's 'call for views' on derogations to the GDPR. In another significant work highlight, the group is instructed by Facebook to advise of several issues including the impact of the GDPR and ePrivacy Regulation. Jon Bartley joined the group from Penningtons Manches LLP and is considered 'extremely strong in the field', with expertise in digital technology and e-commerce, data protection and cyber security.

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Reputation management

Within: Leading individuals

Keith Mathieson - RPC

Within: Reputation management

RPC  is a defendant firm that ‘offers a level of advice and litigation experience that’s hard to beat’. Clients include The Daily Mail, The Sun, The BBC and Financial Times. ‘Hugely experienced’ partner Nicola Cain  advises several high-profile publications on defamation and privacy issues. Keith Mathieson  is praised for being ‘a highly respected partner who has a complete command of the legal issues’. He was the lead partner acting for News Group Newspapers in a privacy and breach of confidence claim brought by the Duchess of York. He also defends MGN Limited in civil claims relating to voicemail interceptions and Associated Newspapers Limited against data protection, libel and privacy claims. Other names to note include Rupert Cowper-Coles,  Philip Tansley  and Oliver Murphy

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London: TMT (technology, media and telecoms)

Media and entertainment (including media finance)

Within: Media and entertainment (including media finance)

The ‘extremely knowledgeable’ department at RPC stands out for its ‘first-rate’ publishing expertise, handling contentious and non-contentious matters. Keith Mathieson has ‘many years of experience and provides pragmatic solutions’, and leads the media defence team, which counts The Telegraph, Associated News Group, The Financial Times, Hachette UK Group, News UK & Ireland and News Group Newspapers as clients. The department is also experienced across advertising, marketing, gaming, social media and interactive content. Oliver Bray advises Google on numerous TV, online and in-store point of sale advertising and marketing campaigns for various new Google product launches; he also provides YouTube with clearance advice in relation to videos and materials created for YouTube advertising campaigns, and advised Dolce & Gabbana in its response to the Irish Advertising Standards Authority, which had flagged two consumer complaints in relation to a television advertisement. Paul Joseph acts for high-profile media and gaming clients on contentious and non-contentious IP matters.  ‘Practical and approachable’ legal director Nicola Cain handles contentious and non-contentious issues involving media regulation, freedom of expression, content, intermediary liability issues and the data-related aspects of marketing. Senior associates Kim Waite and Rupert Cowper-Coles are also recommended. Jon Bartley joined in 2017 from Penningtons Manches LLP.

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