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Tamsin Allen


Head of Media and Information Law

Tamsin works closely with crime, employment, family, public law and actions against the police to provide a seamless reputation and crisis management service.

She was awarded Solicitor of the Year – Private Practice by the Law Society for her pioneering work successfully defending high-profile whistle-blowers – most notably in the Cambridge Analytica and ‘Vote Leave’ cases. You can read Tamsin’s interview with the Law Gazette here.

Tamsin is an experienced and skilled media lawyer.  She has acted for Christopher Wylie, the Cambridge Analytica whistleblower, since Autumn 2017, advising on strategy and wider legal issues arising out of the information he has brought to light about Facebook, Cambridge Analytica and the Brexit Referendum.  These have included advice in relation to exposing confidential and contentious information safely; giving evidence to Parliament, Congress, the Senate, and the European Parliament; and advice on media strategy.

I want to have a shout out to my brilliant lawyer, Tamsin Allen. Because of her, I have been able to tell this story. Whistleblowers need protection, they need help, they need defence. We often forget there are a lot of people behind people, and Tamsin is the Captain of the ship.

– Christopher Wylie, Wired Next Fest 2018

Tamsin also acts for Shahmir Sanni, who exposed criminal offences inside the designated campaign to leave the EU, Vote Leave,  guiding strategy and obtaining the evidence and statements that led to a finding by the Electoral Commission that Vote Leave breached campaign spending rules.

She also represents Carole Cadwalladr in a libel claim brought against her by Leave. EU founder, Arron Banks.

She currently represents a group of women who are defendants in a libel claim brought by a musician relating to allegations of inappropriate behaviour, including sexual assault; a group of individuals in a proposed claim against Facebook in relation to the use of Facebook data by Cambridge Analytica and others; the claimant in a privacy claim against Associated Newspapers Limited in relation to publication of the name of a person wrongly suspected of an offence in connection with the Manchester bombing;  various clients in litigation against Refinitiv’s financial risk profiling database, WorldCheck and a number of other libel, DPA and privacy claims.

Tamsin set up the Claimant Group in the hacking litigation against News Group Newspapers and has represented very large numbers of high profile people in phone-hacking claims.  She is experienced in public inquiries and  represented Core Participant Victims in the Leveson Inquiry. She now represents a number of Core Participants in the Undercover Policing Inquiry and the Independent Inquiry into Child Sexual Abuse.

Tamsin Allen speaking at “Voices of the Spied on” public meeting, University of London

She also provides advice to publishers and NGO’s and charities on publication risks, GDPR and in litigation; including Mirror Group, the National Union of Journalists, Animal Aid, LUSH, Amnesty International, The New Statesman, Greenpeace, Index on Censorship and many others.

She works closely with barristers from Matrix and 5RB to provide additional expertise in all these areas, bringing and defending claims in the High Court, Court of Appeal, Supreme Court and European Court of Human Rights.

Tamsin was featured in The Law Society Gazette in November 2018 following a successful claim against Newsquest Media Group.  You can read the full article here.

Tamsin is regularly invited to speak about media law and recently she gave give evidence to the Joint Human Rights Committee during their inquiry, The Right to Privacy (Article 8) and the Digital Revolution.

You can see Tamsin give evidence here and a copy of the Committee’s report can be found here.

Education and career
  • Tamsin joined Bindmans LLP in 1999
  • She graduated from Oxford University (Balliol College) with a BA in History in 1986

Tamsin’s cases include:

Fox v Wiggins & Ors
  • Defending a group of women who have published blogs online raising concerns about the Claimant, a musician. The case is ongoing

King Blues singer Jonny Fox suing five women over ‘sexual predator’ allegations

Sicri v Associated Newspapers Limited
  • A privacy claim against Associated Newspapers in relation to publication of the name of a person wrongly suspected of an offence in connection with the Manchester bombing
Hakim v Crane & Oths
  • Acting for the Third Defendant, an NHS Consultant in defending a libel claim brought in relation to edits on the Claimant’s Wikipedia profile. The claim was discontinued shortly after an interim hearing, where the Claimant’s statement of case was struck out
Banks v Cadwalladr
  • Acting for the Defendant, Features Writer for The Observer, in a libel claim brought by the founder of Leave.EU
Salman Butt v Secretary of State for Home Department
  • A libel claim on behalf of Dr Salman Butt against the Home Secretary following the issuing of a press release in which Dr Butt was named as an extremist and hate preacher
Sicri v Newsquest Group Limited
  • A libel claim against Newsquest Group in relation to a publication in the Argus Newspaper. The case concluded with the Defendant, in a statement read in open court in November 2018, apologising to the claimant over an article alleging that he was an ISIS sympathiser who had publicly mourned the death of an ISIS leader
TLT and others v Home Office [2016] EWHC 2217 (QB)
HZG v Captive Animal Protection Society [2016] EWHC 1370 (Ch)
IMPRESS 2016-2018
  • Advising UK press regulator on its application for recognition and, with John Halford, successfully representing IMPRESS in a judicial review of the decision to recognise IMPRESS and in subsequent appeal to the Court of Appeal
News Media Association v Press Recognition Panel [2017] EWHC 2527 (Admin)
OPO v James Rhodes and Canongate Books [2015] UKSC 32.
Leslie Austin v Commissioner of Police for the Metropolis [2013]

Successful libel claim in respect of wanted poster following London riots

Othman V English National Resistance [2013] EWHC 1421 (QB)
  • Obtaining an injunction to protect the wife and children of an Islamic preacher from abuse perpetrated by Britain First and the EDL
Steve McFadden v NGN [2014]
Bryant and others v MPS [2011] EWHC 1314 (Admin)

Judicial review of police decision not to inform victims of phone-hacking.  Claim led to numerous claimants being informed about phone hacking and subsequently the Leveson Inquiry

Other cases of significance
Emwazi v Times Newspapers Ltd; Emwazi v Telegraph newspapers Ltd
  • Successful libel claim in relation to false allegations that the parents of Mohamed Emwazi had known of their son’s activities and failed to report him to the authorities
R (on the application of A) v B [2009] Supreme Court [2009] UKSC 12
  • Claim by senior ex MI5 employee in relation to publication of his memoir.  Issues of whether investigatory Powers Tribunal or Administrative Court appropriate jurisdiction to resolve dispute over publication
Animal Defenders International v Secretary of State for Culture Media and Sport [CHECK] [2008] UKHL 15; ADI v UK, ECHR
  • Case in relation to appropriate ambit of political advertising
JHG v News Group Newspapers Ltd
  • Privacy case on behalf of a young actor falsely accused of sexual abuse.  Working with our crime department who successfully defended the actor in criminal proceedings
Christopher Ware
  • Successful libel claim for young man wrongly accused of having been involved in the murder of his best friend in Thailand
Brian Paddick v Associated Newspapers [2003] EWHC 2991 (QB)
  • Early test case on privacy issues relating to publication of fase allegations relating to senior police officer’s sexual life
Lille and Reed v Newcastle City Council and Others 2002
  • Representing two nursery nurses falsely accused of child abuse who were cleared after libel trial
McPhilemy v Times Newspapers [1999] EWCA Civ 1464
  • A 3 month libel jury trial culminating in top award of damages for client, decision and damages award upheld on appeal

I want to have a shout out to my brilliant lawyer, Tamsin Allen. Because of her, I have been able to tell this story. Whistleblowers need protection, they need help, they need defence. We often forget there are a lot of people behind people, and Tamsin is the Captain of the ship

– Chris Wylie

Thank you and your brilliant team for the assistance and support provided in my libel case. I will forever maintain kind thoughts for you and your excellent team

– Les Austin

Please click here to read the full text of the letter from Mr Austin

Thank you for all your support this year, I really appreciate everything you and your team have done for me

– Client 2021
Chambers and Partners UK 2024
  • Tamsin is ranked Band 1 in Defamation/Reputation Management.
  • Commentaries say, ”She really fights her client’s corner. The extent of her involvement is impressive.”
Legal 500 2024
  • Tamsin has been ranked as a ‘Leading Individual’ in Reputation Management.
  • Feedback says, ”Tamsin Allen – very clever, brilliant with clients, engaged and engaging.”
Chambers and Partners 2023
  • Tamsin is ranked Band 2 in Defamation/Reputation Management. Feedback describes her as “a highly experienced practitioner frequently acting on behalf of a wide range of high-profile individuals and corporations on defamation and privacy matters”
  • “Tamsin Allen is very responsive, provides high-class advice and is interested in maintaining relationships long-term”
  • Tamsin is recognised as a ‘Leading Individual’ in Media and Entertainment (including media finance). She is described as “one of the leaders in her field in defamation and data protection”
  • “Tamsin Allen: a legendary media lawyer. Knows everything there is to know – and overflowing with good judgment and commonsense”
  • “Tamsin Allen is a brilliant media lawyer working on cutting edge cases. Clever and strategic lawyer who brings huge experience to the table”
  • Tamsin is also recognised as a ‘Leading Individual’ in Reputation Management
  • “Tamsin Allen – an excellent lawyer who is highly respected and regarding in this field. She has a wealth of experience and knows the law inside out. She delivers great results and knows whether it is necessary and in the client’s best interests to take cases all the way to court, or to settle. Some outstanding results – including in the Supreme Court. Great client care and highly efficient”
Professional memberships
  • Tamsin is on the Board of Hacked Off