David Went

Call 1999


"He is really good at analysing very complex patterns, his drafting skills and attention to detail are first rate, and his written submissions are excellent; he's easy to work with."

Chambers and Partners 2022
Photo of David Went


David is internationally renowned as a leading competition law specialist, having been recognised in Global Competition Review’s list of leading competition lawyers under 40 years old worldwide in 2012 and (among only a select number of barristers) in Who’s Who Legal UK Bar 2021: Competition Juniors.

Prior to returning to his roots as a barrister during 2015 (having originally been called to the bar in 1999), David’s considerable competition law experience has been acquired at two leading US law firms in Brussels and London, most recently as partner at Sidley Austin LLP. David has acted for clients (e.g., ADM, Alberto Culver, Aon, Federation Internationale de l’Automobile, GSK, Hachette, IBM, LG Electronics, Spectris, Viterra, and Western Union) on some of the most significant and complex matters over the past 16 years across the spectrum of competition law work.

Regularly appearing before the main EU and UK courts and competition authorities, David specialises in all litigation and advisory aspects of competition law, covering:

  • Abuse of dominance
  • Cartels
  • Commercial practices
  • Compliance
  • Damages actions
  • M&A
  • Public procurement
  • State aid
  • Related areas of EU, public and regulatory law

David has experience of working in a diverse range of industries, including aerospace, agriculture, automotive, financial services, FMCG, high-tech, insurance, IT/internet, life sciences, manufacturing, media, mining, publishing, shipping, sports, telecoms, and utilities.

He has worked on a large number of multi-jurisdictional matters using, where needed, a network of trusted local counsel. David also has good working relationships with competition law specialists at the main economic consultancies.

As clients make clear in legal directory submissions, David is approachable, practical, and commercially focused. In addition, clients appreciate his ability to quickly understand their business models and needs, coupled with his creativity in finding solutions.

He combines huge commercial knowledge with a second-to-none understanding of competition law. A naturally industrious advocate his attention to detail is truly market-leading.

Competition Cases

Representative litigation work:

Road Haulage Association v MAN SE and Ors (representing the Road Haulage Association in collective proceedings against European truck manufacturers) Appearances include:

  • Road Haulage Association v MAN SE and ors (permission to appeal) (https://www.catribunal.org.uk/sites/default/files/2019-12/1282-1289_Trucks_Ruling_CAT_28_171219.pdf)
  • Road Haulage Association v MAN SE [2019] CAT 26 (funding issues) (https://www.catribunal.org.uk/sites/default/files/2019-10/1282-1289_Trucks_Judgment_281019.pdf)
  • Road Haulage Association v MAN SE and Ors [2019] CAT 15 (adjournment judgment) (https://www.catribunal.org.uk/sites/default/files/2019-05/1282_1289_Trucks_Judgment_CAT_15_170519.pdf)
  • See more generally the CAT case file: https://www.catribunal.org.uk/cases/12897718-road-haulage-association-limited

Achilles Information Limited v Network Rail Infrastructure Limited (acting for Network Rail in a restrictive agreements and alleged abuse of dominance case in the area of supplier assurance). Appearances include:

  • Achilles Information Limited v Network Rail Infrastructure Limited [2022] CAT 9 (Competition Appeal Tribunal)
  • Achilles Information Limited v Network Rail Infrastructure Limited [2020] EWCA Civ 323 (Court of Appeal judgment) (https://www.catribunal.org.uk/sites/default/files/2020-04/1298_Achilles_CoA_judgment_050320.pdf)
  • Achilles Information Limited v Network Rail Infrastructure Limited [2019] CAT 20 (CAT judgment) (https://www.catribunal.org.uk/sites/default/files/2019-07/1298_Achilles_Judgment_CAT__20_190719.pdf)
  • Achilles Information Limited v Network Rail Infrastructure Limited [2018] CAT 15 (ruling on application for expedition) (https://www.catribunal.org.uk/sites/default/files/2018-10/1298_Achilles_191018_0.pdf)
  • See more generally the CAT case file: https://www.catribunal.org.uk/cases/12985718-achilles-information-limited

Seafood Holdings Limited v My Fish Company Limited & Ors [2017] EWHC 766 (Ch) (acting for Seafood Holdings Limited in alleged abuse of dominance counterclaim) (https://www.bailii.org/ew/cases/EWHC/Ch/2017/766.html)

Advising sports federation on potential challenge under EU competition and free movement rules

Public procurement challenge to awards of 2015 duty solicitor contracts by Legal Aid Agency

Streetmap.eu Ltd. v Google Inc., Google Ireland, and Google UK Ltd. (damages claim/abuse of dominance)

Bord Na Mona plc v British Polythene Industries plc. (follow-on damages action before English High Court relating to European Commission’s industrial bags cartel decision)

Advising electronics manufacturer regarding potential follow-on damages claims before English High Court/Competition Appeals Tribunal

Adidas Salomon AG v Lawn Tennis Association; and Adidas Salomon AG v International Tennis Federation(alleged breaches of EU/UK competition law)

Appeal of power cables cartel decision to EU’s General Court

Case C-550/07 P Akzo Nobel (intervention in case relating to legal privilege for in-house Counsel)

Case T-464/04 Independent Music Publishers and Labels Association (Impala) v Commission (appeal against European Commission’s decision approving SONY/BMG merger)

T-184/01 IMS Health Inc v Commission and Case C-481/01 P(R), NDC Health (appeal against interim measures order by European Commission to license IP to competitor)

Representative EU and UK cartel and behavioural cases:

Ongoing CMA cartel investigation

CMA investigation into price fixing of consultation fees with respect to ophthalmology pursuant to the Chapter I prohibition of the Competition Act 1998 (https://www.gov.uk/government/news/cma-imposes-12m-in-fines-for-price-fixing-in-private-eyecare)

Representing company implicated in European Commission’s cartel investigation into underground and submarine power cables (including appeal of European Commission decision to General Court)

Representing Hachette UK, one of the UK’s largest book publishers, in OFT’s and European Commission’s investigations into eBooks

Representing multi-national company implicated in OFT’s A-B-C cartel investigation into health and beauty products
Representing company implicated in European Commission’s cartel investigation into LCDs

Representing company implicated in European Commission’s cartel investigation into optical disk drives

Advice to large UK insurance company following on from investigation by OFT into information exchanges in motor insurance sector

Representing chemicals company in Chapter II/Article 102 investigation before OFT

Representing company implicated in European Commission’s cartel investigation into copper fittings

Advising leading UK transport company in Chapter II proceedings before OFT

Representing IMS Health in Article 102 investigation by European Commission

Representative EU merger cases:

Arcelor/Mittal Steel (first phase divestiture remedy)

SONY/BMG (unconditional approval following second-phase review)


Motorola Mobility/Flextronics

Suntory/Beam Inc.

Representative UK merger cases:


British Salt/New Cheshire (unconditional clearance following second-phase review and first case in which second-phase provisional findings were overturned)

Hachette/Time Warner Book Group

Western Union/Travelex Global Business Payments

Unilever/Alberto Culver (first-phase clearance with divestiture remedy)

Representative multi-jurisdictional merger cases:


Becton Dickinson/Safety Syringes (unconditional clearance following second-phase review in Germany)

Glencore/Viterra (including unconditional clearance in China following third-phase review)

Motorola Mobility/Flextronics

Tellabs/Marlin Equity

Unilever/Alberto Culver

Representative EU State aid work:

Advice to company active in aerospace sector over several investment projects, including meetings with European Commission and UK government officials

Advice to European utility company over power supply agreements

Advice in connection with M&A transactions in which target companies were potential recipients of State aid

Advising local authorities on infrastructure funding

Advice to charities receiving Big Lottery Funding