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Tamsin Blow


CMS Cameron McKenna Nabarro Olswang LLP
Cannon Place
78 Cannon Street
United Kingdom
Languages English

Tamsin Blow is a Partner in the Litigation and Arbitration Group, specialising in commercial, media and public law dispute resolution. Tamsin draws on over fifteen years’ experience with the firm to offer clients strategic and commercial advice on potential and on-going disputes.

Tamsin acts in substantial commercial disputes including multi-jurisdictional fraud cases for claimants (such as the former subsidiaries of Yukos Oil) and defendants.

Tamsin supports clients through reputation management issues and times of crisis. She draws on her expertise in defamation, data protection and privacy law and her investigations experience, including as advisor to News International in relation to the voicemail interception crisis.

Tamsin also has particular expertise advising gambling operators on a full range of contentious legal and regulatory issues, including supplier disputes, customer disputes, judicial reviews, Gambling Commission investigations and licence reviews and anti-money laundering and social responsibility policies and procedures.

Tamsin is recognised by the directories in relation to civil fraud, reputation management and gaming & betting.

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“Tamsin Blow is an ‘excellent litigator’”

Legal 500, 2023

“Her advice is comprehensive, knowledgeable and to the point - exactly what we need."

Chambers, 2022

"She is sharp, commercial and gets things done."

Chambers, 2017

"Described by peers as "meticulously thorough," and “someone who is going places"."

Chambers, 2016

Relevant experience

  • Judicial review before the English Court of legislation introducing point of consumption licensing and taxation of remote gambling and a reference to the Court of Justice of the European Union on behalf of the Gibraltar Betting and Gaming Association.
  • Yukos entities and former senior management in multi-jurisdictional litigation arising out of the misappropriation of assets and related issues.
  • Successful Supreme Court challenge of HMRC decision to disclose confidential information regarding Ingenious Media and its CEO.
  • Obtaining interim injunction for defamation, final judgment for defamation, strike out of conspiracy claim and several civil restraint orders on behalf of international accountancy firm.
  • Defendant to $120m fraud claim by Kazakh bank JSC BTA against former Chief Executive Mukhtar Ablyazov.
  • Secondment to the Management and Standards Committee of News International during the voicemail interception litigation and acting on the civil cases.
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  • 2006 – LPC, Oxford Institute of Legal Practice, Oxford
  • 2005 – GDL, Oxford Brookes, Oxford
  • 2003 – BA Hons, Cambridge
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Keeping the Wolf from the Door: Reducing the Black Market
Ever since the Review of the Gambling Act 2005 commenced (and for some time before), the gambling industry has raised the spectre that enhanced measures to identify and protect those at risk from gambling...
Gambling White Paper Consultations: The Commission’s Response on Financial...
The Gambling Commission (GC) has now published its response to its latest consultation on financial vulnerability and financial risk (which was published in July 2023 and discussed in our article here)...
Bet365 reaches regulatory settlement with the Gambling Commission
On 4 April 2024, the Gambling Commission (the “Com­mis­sion”) announced that it had reached a regulatory settlement with Bet365. The settlement comprised a payment in lieu of a financial penalty totalling...
CMS Media Update Morning 2024
 Our popular Media Update Morning returns and we are excited to welcome you in person to discuss a range of topical areas including:The latest changes to the Media Bill and FAST channel regulation - Victoria Gaskell, John Enser and Sam OustayiannisWhy you need to know about ECCTA now! - Kitty St AubynThe busy world of regulation (tax credit changes, online safety and more) - Rebecca PlattPrivilege quiz (how to keep it and lose it) - Tamsin BlowPlease do come early and join us for coffee and breakfast. As ever, the content will be tailored for the media industry, and we invite you to submit any specific questions in advance by emailing us at Events@cms-cmno. com. To RSVP, please click the button below.  
Gambling Commission publishes new Money Laundering and Terrorist Financing...
On 9 February 2024, the Gambling Commission (the “Com­mis­sion”) published its new list of emerging money laundering and terrorist financing risks (the “Emerging Risks”). Operators are required...
Gambling Commission Consultation: Financial Penalties and Financial Key...
In­tro­duc­tion The Gambling Commission (the “GC”) has opened a consultation on proposed changes relating to financial penalties and financial key event reporting. The proposed changes to financial...
Online operator Gamesys fined £6M for AML and social responsibility failures
On 10 January 2024,  the Gambling Commission (the “Com­mis­sion”) announced that Gamesys Operations Limited (“Gamesys”) had been issued a £6 million fine after a compliance assessment in May 2022...
Money Laundering and Terrorist Financing Risk Assessment 2023
Introduction On 30 November 2023, the Gambling Commission (the “Com­mis­sion”) published its latest risk assessment into money laundering and terrorist financing (the “Com­mis­sion’s Risk As­sess­ment”)...
Gambling Commission announces changes to Licence Conditions and Codes of...
Following a consultation in February 2023, the Gambling Commission (the “Com­mis­sion”) has confirmed that it will proceed with three key changes to its Licence Conditions and Codes of Practice (the...
Gambling Commission Customer Interaction Guidance: Update
The Gambling Commission (the “Com­mis­sion”) has updated the customer interaction guidance for remote gambling operators under Social Responsibility Code Provision (“SRCP”) 3.4.3 of the Licence...
Gambling Commission suspends licence of online gambling operator In Touch...
The Gambling Commission (the “Com­mis­sion”) announced on 1 September 2023 that it had immediately suspended the operating licences of In Touch Games Limited (“ITG”) in accordance with section 118(2)...
Betfred (cash Betting) limited reaches regulatory settlement
On 18 July 2023, the Gambling Commission (the “Com­mis­sion”) announced that it had reached a regulatory settlement with Done Bros (Cash Betting) Limited (“Betfred”), comprising a payment in lieu...