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David Zeffman

David Zeffman

Head of Gambling and Sport

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

David has been one of the leading lawyers in the UK media sector for over 25 years and has extensive experience providing strategic, commercial and regulatory advice to clients in the gambling, sport and television sectors. He has been involved in many of the major transactions that have taken place in these sectors, including the launch of several television channels and the sale of media rights to some of the world's biggest sporting competitions.

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David Zeffman of CMS advises major clients in cricket and football in relation to global media rights, as well as sponsorship arrangements. Clients describe him as "brilliant, bright, commercial and well connected."

Chambers 2019

London-based David Zeffman of CMS is head of the firm's gaming and sport practice and possesses a wealth of experience acting for prominent gaming operators on regulatory, corporate and commercial matters. Sources describe him as "a very substantive, strong person in gaming," with one interviewee professing: "I regard him as a guru in the area, I rate him very highly."

Chambers 2019

David Zeffman advises some of the most well-known online gaming operators in the sector on transactions, regulatory issues and contentious cases. Clients value him for his "experienced guidance and great commercial judgement."

Chambers 2019

London-based David Zeffman of CMS is head of the firm's gambling and sport department. Sources praise him as "well connected and he knows the industry very well." Interviewees appreciate that "he has brought attention to the UK gaming market." He regularly provides strategic, regulatory and commercial advice to clients within the industry, with a particular focus on the horse-racing sector.

Chambers 2019

Relevant experience


  • Gamesys on a range of commercial, regulatory and corporate matters including: the sale of its JackpotJoy and other brands to Intertain for an initial payment of GBP 425.8m; advising on its online gaming partnership with the New Jersey casino Tropicana; the acquisition of Virgin Games; and Gamesys’ partnership with Metric Gaming to launch its sportsbook offering.
  • The Gibraltar Betting and Gaming Association on its legal challenges to the UK Government’s reform of the taxation of remote gambling services and to the introduction of place of consumption licensing and regulation in Britain.
  • GVC with regulatory advice in the context of its bid for bwin.party Digital Entertainment Plc, as well as providing support during the due diligence process running-up to the successful bid made by GVC for bwin.party.
  • Tote Media Limited, (established by Betfred owner and chairman, Fred Done) on its deal that enabled the Great Leighs racecourse to reopen.


  • The ECB on its GBP 1.1bn sale of the UK media rights to English cricket from 2020-2025.
  • ICC on its global media rights tender, bidding and evaluation process for 18 tournaments between 2015 and 2023.
  • The Government on the future funding of British horseracing following the decision of the European Court of Justice in the William Hill v BHB database rights case.
  • FIFA on the worldwide sale of media rights to the 2010 and 2014 World Cups.
  • Setanta Sports, SingTel, Sky Italia, Dentsu and many others on their acquisition of rights to broadcast Premier League football.


  • The launch and/or subsequent operations of many television channels since the launch of satellite television in the 1980s including MTV Europe, VH1, FilmFour, E4, AtTheRaces, Bloomberg and Eurosport.
  • The set up, funding, launch and all activities of the DTT pay television platform Top Up TV.
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  • 1980 - MA Jurisprudence,  Brasenose College, Oxford
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  • Member - The Editorial Board of World Online Gambling Law Report and World Sports Law Report.
  • Member - International Masters of Gaming Law.
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22 December 2020
The Gen­er­al Court of The European Uni­on is­sues its judg­ment in the In­ter­na­tion­al...
In­tro­duc­tion On 16 Decem­ber 2020, the Gen­er­al Court of the European Uni­on (the “Gen­er­al Court”) is­sued its judg­ment in the In­ter­na­tion­al Skat­ing Uni­on case. The Gen­er­al Court con­firmed that the ISU’s...
21 December 2020
CMS Ex­pert Guide to on­line gambling law and reg­u­la­tion in Europe
The gambling in­dustry is con­stantly in a state of change. Check out this Ex­pert Guide to see the gambling leg­al land­scape and who to con­tact for any gambling reg­u­lat­ory con­cerns.Al­though this re­source...
10 December 2020
The Gambling Act Re­view – what do we know so far?
Fol­low­ing the an­nounce­ment on 8 Decem­ber 2020 that the Gov­ern­ment has launched its re­view of the Gambling Act 2005, the Terms of Ref­er­ence and Call for Evid­ence have now been pub­lished, to­geth­er with...
20 November 2020
United States Sen­ate passes Anti-Dop­ing Le­gis­la­tion
On 16 Novem­ber 2020, the United States Sen­ate passed le­gis­la­tion that would al­low the pro­sec­u­tion in the US of dop­ing of­fences at in­ter­na­tion­al sport­ing events in which Amer­ic­an ath­letes, spon­sors, or...
13 November 2020
#gambling­shorts video series
In our series #gambling­shorts, CMS law­yers from around the world talk about the latest de­vel­op­ments in gambling reg­u­la­tion in their coun­try. Find the videos be­low.
10 November 2020
ASA rules that Gala Spins ad ap­pealed to chil­dren
On 28 Oc­to­ber 2020 the Ad­vert­ising Stand­ards Au­thor­ity (“ASA”) ruled that an LC In­ter­na­tion­al Ltd t/a Gala Spins (“Gala Spins”) ad was to be banned from ap­pear­ing in its cur­rent form. The ASA...
23 October 2020
CAP launches pub­lic con­sulta­tion on pro­posed re­stric­tions for gambling...
The Com­mit­tees of Ad­vert­ising Prac­tice (“CAP”) has launched a pub­lic con­sulta­tion on pro­pos­als to in­tro­duce new ad­vert­ising guid­ance and rules aimed at pro­tect­ing chil­dren, young people and vul­ner­able...
12 October 2020
ASA bans Foxy Games’ “Earn Money On­line” Ad but clears Bet­fair Casino’s...
The Ad­vert­ising Stand­ards Au­thor­ity (ASA) has banned a paid-for on­line search en­gine ad re­leased by Foxy Games but con­firmed that a TV ad for Bet­fair Casino did not in­fringe the BCAP Code. Foxy Games...
30 September 2020
Bet­ting and Gam­ing Coun­cil re­leases Game Design Code of Con­duct
The Bet­ting and Gam­ing Coun­cil (BGC) has re­leased its in­aug­ur­al Game Design Code of Con­duct, aimed at im­prov­ing play­er safety and re­du­cing prob­lem gambling. The Code sets out a num­ber of prin­ciples and...
28 September 2020
UK Gov­ern­ment launches con­sulta­tion on loot boxes
The De­part­ment of Di­git­al Cul­ture Me­dia and Sport (“DCMS”) has launched a call for evid­ence on the im­pact of loot boxes in video games to help it de­term­ine wheth­er they should be clas­si­fied as gambling...
08 September 2020
European Com­mis­sion form­ally opens in-depth state aid in­vest­ig­a­tion in­to...
On 2 Septem­ber 2020, the European Com­mis­sion (“Com­mis­sion”) form­ally opened an in-depth in­vest­ig­a­tion in­to wheth­er Bel­gi­um’s grant of a li­cence to Lad­brokes to op­er­ate vir­tu­al bet­ting in Bel­gi­um...
21 August 2020
Na­tion­al Cy­ber Se­cur­ity Centre (“NC­SC”) re­port high­lights cy­ber risk to...
A re­cent NC­SC re­port has high­lighted a num­ber of cy­ber-at­tacks by hack­ers against the sports in­dustry, lead­ing its Dir­ect­or of Op­er­a­tions, Paul Chichester, to urge sports or­gan­isa­tions to re­view their...