OVERVIEW

Luke is a competition litigation specialist. His practice focuses on the promotion of fair markets and consumer welfare, and in particular the private enforcement of competition, data protection and consumer law.

Expertise

Luke has acted on some of the largest and most complex competition litigation matters in recent years, including bringing and defending major collective proceedings before the Competition Appeal Tribunal.

He advises the proposed class representative on the £7 bn UK claim against Google for abuse of dominance in search, and is one of the lead partners in the first historic consolidation of £13.6 bn claim against Google for abuse of dominance in adtech.

Luke also led the first ever complaint to the Information Commissioner’s Office (ICO) regarding the implementation of the Age-Appropriate Design Code (AADC), in relation to the processing of children’s data by YouTube in its recommender algorithm.

He joined Hausfeld from Allen & Overy LLP where he was a senior associate in their competition litigation practice. Committed to defending civil liberties and human rights, Luke has an active pro bono practice. He also undertook time on secondment at Liberty.

Clients

Luke has acted for a range of governments, financial institutions, financial corporations and high net worth individuals in advancing and defending high value claims in the High Court, and in ICC, LCIA, LMAA and ECT arbitral proceedings.

BAR ADMISSIONS

Solicitor, England and Wales, 2007

Attorney, United States, California Bar, 2021

WHAT OTHERS SAY

Chambers UK

Luke Streatfeild is 'incredibly commercial and a force of calm'; 'he deeply understands the issues and efficiently and decisively deals with complex decisions'; 'a great leader with a strong vision who draws on his team's expertise well' and 'he can really see through things that are stressing people out and manage the team well.' - Competition Law: Private Enforcement: Claimant, Chambers UK and Chambers Global, 2025

Luke Streatfeild 'stands out as a very strong litigator'; 'he is very strategic'; 'brilliant' and 'I find him strategic, good at picking the right cases, picking the right team and is efficient in managing litigation.' - Group Litigation: Claimant, Chambers UK, 2025

Luke Streatfeild 'is inventive and strategic. He's super impressive in his organisational skills too' and 'is particularly impressive. He's making some real moves in competition circles'; ' Luke is a great manager of litigation projects. He's very even-tempered, bright and articulate. He's a good guy to work with.' - Group Litigation: Claimant, Chambers UK, 2024

Global Legal Post

“Luke’s elevation owes much his detailed knowledge of the ways in which competition law and commercial litigation interact, and is equally laudable.” - 2021

Legal 500 UK

Luke Streatfeild has been recognised as a Next Generation Partner for his expertise in Competition Litigation in 2025.

Ranked as a key lawyer, Luke 'really stands out for his outstanding judgment and effectiveness in putting together and leading a brilliant team.' - Group Litigation Claimant, 2025

‘Key Lawyer Luke Streatfeilld is all over the detail. His focus on CAT collective claims and, specifically, big tech claims, makes him a leader in this area, he has carved himself out as an expert in this field. He has real skill in translating and communicating complex issues and to managing with aplomb the significant number of competing threads that arise in these claims. Luke has excellent judgment and delivers fantastic results.’ - Competition Litigation, 2024

'Luke Streatfeild is highly knowledgeable as well as being battle hardened in the leading cases.’ - Group Litigation: Claimant, 2024

Ranked as a 'Key Lawyer, Luke Streatfield is another partner to watch - he is brilliant to worth with and achieves fantastic results.' - Competition Litigation, 2023

Who's Who Legal

Recognised in 2023 as a Global Leader in Competition Plaintiff.

Lawdragon

Luke was recognised by Lawdragon in 2024 and 2025 in their list of 500 Global Plaintiff Lawyers for Competition and Financial Services plaintiff litigation.

Experience

Antitrust/Competition

Luke is part of the competition team at Hausfeld working on:

An opt-out collective action filed with the CAT on behalf of an estimated 19.5 million eligible UK users of smartphones and tablets running on Google’s Android operating system relating to excessive and unlawful charges on purchase in the Google Play App Store. The claim alleges that Google unfairly restricts consumers from accessing potential competition from other app distributors, by requiring smartphone manufacturers to pre-install a bundle of Google’s proprietary apps and services including the Google Play Store as well as imposing other contractual and technical restrictions
A representative collective action filed with the CAT on behalf of some 19.6 million eligible UK iPhone and iPad users relating to excessive and unlawful charges by the Apple App Store. The claim alleges that Apple’s conduct violates section 18 of the UK Competition Act 1998 and Article 102 of the Treaty on the Functioning of the European Union.
Representing proposed class representative, technology journalist Charles Arthur, in a collective action filed in the CAT seeking up to £3.4bn on behalf of over 200,000 UK publishers of websites and apps against tech giant Google who allegedly has unlawfully restricted competition by favouring its own ad tech services and charging inflated prices in the online display advertising market to publishers since at least 2014.
Trains - The very first collective claim filed by Hausfeld back in February 2019, with co-counsel Charles Lyndon. It was also the first collective claim brought before the CAT on a standalone basis. Crucially for the regime more generally, in July 2022 the Court of Appeal held in Trains that liability can be determined on an aggregate basis in collective proceedings, which was a very important ruling for collective proceedings in the UK. We helped progress the case over 5 years during which the claim benefited from our competition litigation expertise.
SSE plc & ors v Prysmian Cables & Systems Ltd and Others, representing companies with claims arising out of a global cartel in the high voltage cables manufacturing sector.

Formerly an Associate in Cleary Gottlieb’s London office, he:

Represented clients contesting and supporting decisions by competition authorities, including representing Ryanair in challenging decisions of the Competition Commission prohibiting the purchase of Aer Lingus.
Acted for Metlac in the Competition Appeal Tribunal and Court of Appeal supporting the CMA’s decision to block a hostile takeover by AkzoNobel.

Technology & Data Breach

Luke helped lead the Hausfeld team which:

Filed a CPR 19.6 representative action brought on behalf of Duncan McCann, on behalf of up to 5 million British children aged under 13 and their parents in the High Court – alleging that YouTube’s methods of targeting underage audiences and harvesting their data constitute major violations of the UK Data Protection Act and the EU’s General Data Protection Regulation (GDPR), both of which were designed to protect citizens’ privacy rights.

Commercial & Financial Disputes

Prior to joining Hausfeld, Luke gained experience:

Managing a cross border team in LMAA arbitral proceedings advancing claims relating to the construction and delivery of a €500m superyacht.
Acting for a high street bank in defending High Court proceedings regarding the sale of a distressed debt portfolio, including ancillary insolvency proceedings in the Chancery Division of the High Court.
Advising an AIM listed mining company in defending mass tort claims relating to operations in Sierra Leone.
Representing a Caribbean government in a $60m Bermuda arbitration claim.
Duncan McCann v Google: a multi-billion pounds claim brought on behalf of up to 5 million British children aged under 13 and their parents. The claim alleges that YouTube’s methods of targeting underage audiences constitute major violations of the UK Data Protection Act and the EU’s General Data Protection Regulation (GDPR), both of which were designed to protect citizens’ privacy rights.