Hall Of Fame

Firms To Watch: Group litigation: Claimant

Lanier, Longstaff, Hedar & Roberts LLP launched in the UK in 2022 with the hires of UK barristers Tom Longstaff and Duncan Hedar, both formerly of Linklaters LLP. The Manchester-based team will work in tandem with US claimant class action leader The Lanier Law Firm.

Group litigation: Claimant in London

Hausfeld & Co LLP

Hausfeld & Co LLP is a market leader in the group litigation space, acting on competition claims across a wide range of sectors. Prospective shareholder and mis-selling claims, as well as product liability and human rights claims are all additional strengths of the practice . Nicola Boyle is the head of the team, with vast experience in collective redress cases; she has been acting on the high-profile collective claim against Qualcomm. A number of other impressive individuals form the team, including Lesley Hannah, who has technology-related expertise, Lucy Rigby, specialising in large-scale group actions, and managing partner Lianne Craig, who has ‘exceptional people skills’.

Practice head(s):

Nicola Boyle

Other key lawyers:

Lesley Hannah; Lucy Rigby; Lianne Craig; Luke Streatfeild; Sarah Moore; Sofie Edwards; Anthony Maton


‘Lianne Craig has exceptional people skills and is able to find creative solutions to running cases’

‘The team has sector expertise across many jurisidictions’

‘The number one claimant group litigation practice on this side of the Atlantic. First to the market and have never looked back. Real commitment to this area, and outstandingly strong lawyers at partnership level and below.’

‘Anthony Maton is without a doubt the leader in London and the rest of Europe. He has been there from the beginning and has unrivalled expertise. His partners Lesley Hannah, Nicola Boyle and Luke Streatfeild are all highly knowledgeable as well as being battle hardened in the leading cases.’

Work highlights

  • Filed a collective claim in the UK’s Competition Appeal Tribunal on behalf of technology journalist Charles Arthur who proposed to represent UK publishers of websites and apps against tech giant Google.
  • Building a group action against Mercedes-Benz in in the UK on behalf of individual and business purchasers of diesel Mercedes vehicles, following findings by the German Transport Authority that Mercedes installed devices in diesel vehicles that could cheat emissions tests.
  • Advises and represents Philip Evans in the significant collective action against six global banks seeking damages in respect of foreign exchange (FX) spot trading cartels.

Keller Postman UK

Litigation boutique Keller Postman UK offers a ‘very bespoke and individualised service’ for its clients, with specific expertise in group litigation. Consumer representation is a key focus for practice, with the team acting on high-profile data breach claims, equal pay matters, and vehicle emissions claims. Managing director Andrew Nugent Smith is a ‘great leader as well as technically excellent lawyer’, and sits at the helm of the team that includes ‘legally sophisticatedMark Kenkre and legal director Hannah Wright-Jones who is ‘extremely dedicated and analytically strong’. At associate level, Nathaniel Barber is ‘extremely able and talented’, and is noted alongside Lesley Ainsworth.

Practice head(s):

Andrew Nugent Smith

Other key lawyers:

Mark Kenkre; Nathaniel Barber; Kingsley Hayes; Hannah Wright-Jones; Lesley-Ann Ainsworth


‘Andrew Nugent Smith is an innovator in the group litigation space. One of the trailblazers who others now seek to follow. A great leader as well as technically excellent lawyer (both key to managing large scale group actions).’

‘Mark Kenkre – legally sophisticated, clinical but always commercial.’

‘The team provides a very bespoke and individualised service, with great specialism in group litigation.’

‘Mark Kenkre – very hands-on, sensible, and commercial. Hannah Wright-Jones – proactive, well-informed, hard-working.’

‘Nathaniel Barber is an extremely able and talented associate who operates group claims at the highest level.’

‘Kingsley Hayes is an excellent tactician.’

‘Hannah Wright-Jones is extremely dedicated and analytically strong. She has proven herself to be very adept at managing large scale group litigation and clientele numbering in the tens of thousands.’

Lesley-Ann Ainsworth combines strong instincts on all matters substantive and strategic with an exceptional diligence in everything that she does.’

Key clients

Mercedes-Benz (Daimler AG) emissions claimants

Uber workers’ rights claimants

Volkswagen Group emissions claimants

Tesco workers’ rights claimants

Binance Cryptoasset claimants

London Metal Exchange claimants

TerraUSD Claimants

EasyJet data breach claimants

British Armed Forces pension mis-selling claimants

Vauxhall emissions claimants

Equiniti data breach claimants

Sports fraud claimants

Plevin/PPI claimants

Police Federation of England and Wales membership data breach claimants

Equifax data breach claimants

Asda workers’ rights claimants

Morrisons workers’ rights claimants

Sainsburys workers’ rights claimants

Work highlights

  • Representing consumers in vehicle emissions claims arising out of the infamous “dieselgate” scandal in which car manufacturers mislead consumers and regulators on the emissions from diesel vehicles, including actions against some of the largest and well-known brands such as Mercedes-Benz, Volkswagen, and Vauxhall.
  • Representing workers in rights claims for fair wages and back pay from the UK’s four largest supermarkets Tesco, Sainsbury’s, Asda and Morrisons, and Uber, the world’s largest ride-sharing company.
  • Representing consumers bringing high-profile data breach and cybercrime claims following attacks against major airlines British Airways and EasyJet, credit reporting giant Equifax, Ticketmaster, the biggest ticketing company in the world, and leading pensions services company Equiniti.

Pogust Goodhead

Pogust Goodhead’s group litigation practice acts on high-profile, high-value collective actions, often precedent-setting in nature. The team is active on many leading cases in this arena, representing tens of thousands of claimants in the highly publicised Dieselgate cases, as well as the British Airways data breach class action. Product liability is another strength of the team that is jointly led by Tom Goodhead and Christopher Neill. Céline Barnwell’s practice focuses on complex cross-border disputes, particularly in the environmental law space, playing a crucial role on the well-known Fundao dam dispute that the practice is widely commended for. The strength of the team was further bolstered by the arrival of Guy Robson from Keller Postman UK in November 2022.

Practice head(s):

Tom Goodhead; Christopher Neill

Other key lawyers:

Céline Barnwell; Guy Robson

Work highlights

  • Representing over 700,000 claimants in a landmark litigation against two entities of the BHP group dually listed in England and Australia, regarding the 2015 ‘Fundao Dam collapse’ in South-Eastern Brazil.
  • Issued proceedings against petrochemical giant Braskem over significant environmental destruction caused by its controversial mining activities in the city of Maceio, Brazil.
  • Acting on behalf of over a thousand affected Brazilian claimants in the widely devastating Brumadinho environmental litigation.

Stewarts Law LLP

The highly regarded group actions offering at Stewarts Law LLP is jointly led by head of tax litigation David Pickstone, competition litigation head Kate Pollock and securities litigation head Keith Thomas. The team, which focuses on cases concerning securities, competition, tax, financial product mis-selling, consumer and data privacy, has recently been acting for multiple financial institutions in claims against Glencore – the firm has a track record of high-profile roles on a raft of other headline-making claims, including the Ingenious and Eclipse film scheme cases and Asda Stores Limited & Others v Mastercard in the Supreme Court.

Practice head(s):

David Pickstone; Kate Pollock; Keith Thomas

Other key lawyers:

Fiona Gillett; James Le Gallais; Marc Jones

Fox Williams LLP

Fox Williams LLP boasts a ‘skilled and experienced group litigation team’ that acts on many high-profile securities class actions, acting for large institutional investors against leading companies. The practice has extensive experience across s90 and s90A FSMA claims, and levies the experience of other departments at the full-service firm to offer expertise to clients. Andrew Hill  is ‘one of the very best when it comes to securities claims’, and is commended by one client for being ‘intelligent, thorough, responsive, and experienced’. Having joined the firm from Keystone Law in November 2022, Matthew Reach brings a wide range of expertise, having been involved in the RBS Rights Issue litigation.

Practice head(s):

Andrew Hill

Other key lawyers:

Matthew Reach


‘Andrew Hill is a recognised leader in the area of group litigation. An excellent lawyers with creative thinking.’

‘Always partner-led, the Fox Williams team is responsive, reliable and highly experienced. It is no surprise they are at the forefront of securities claims.’

‘Andrew Hill is one of the very best when it comes to securities claims – he is brilliant to work with and achieves fantastic results.’

‘Skilled and experienced group litigation team led by the roundly liked and respected Andrew Hill, Fox Williams’s proposition is compelling and entrepreneurial.’

‘Andrew Hill – intelligent, thorough, responsive, experienced, and creative, as well as very enjoyable to work with.’

‘Andrew Hill is an extremely experienced group litigation specialist who understands the market and the best strategy intimately.’

Work highlights

  • Acting on a successful case for well-known institutional investor claimants against Tesco PLC.
  • Acting for 205 well-known institutional investor claimants against Glencore PLC.
  • Bringing a major class action case on behalf of shareholders against Petrofac Limited after the company pleaded guilty to breaches of the UK’s Bribery Act.

Harcus Parker Limited

At Harcus Parker Limited, a team of ‘down-to-earth, pragmatic, and great team players’ acts on a diverse array of cases in the group litigation space. The expertise of the team extends across a wide range of collective actions, with experience in financial and shareholder actions, consumer cases, and equal pay claims. Competition Appeal tribunal work and data breach cases are also a mainstay of the practice, that for one client, consist of ‘group claim specialists and leaders in their field’. Damon Parker, a ‘charming and excellent strategist’ is the head of the team, having founded the firm in 2019. Parker has expertise in financial services and commercial claims, and is currently acting on the high-profile Woodford group action. Noted practitioners include Jeremy Robinson and Thomas Ross, who have ‘unparalleled knowledge and experience in group litigation’, and at associate level, ‘hugely bright and tenaciousMatthew Patching, and ‘standout associate’ Olivia Selley. The team continues to grow, with Rob Murray joining as a consultant from Mishcon de Reya LLP in October 2022.

Practice head(s):

Damon Parker

Other key lawyers:

Matt Patching; Emily Fernando; Jennifer Cassidy; Edward Parkes; Jeremy Robinson; Thomas Ross; Daniel Kerrigan; Olivia Selley; Jennifer Morrisey


‘Emily Fernando, Jennifer Cassidy and Edward Parkes are all very professional, highly trained solicitors who really know their stuff, coupled with the human touch – they are very compassionate, caring people.’

‘They are down-to-earth, pragmatic and great team players.’

‘Jeremy Robinson and Thomas Ross have unparalleled knowledge and experience in group litigation.’

Work highlights

  • Acting for claimants in four inter-linked class actions in the Competition Appeal Tribunal concerning MasterCard and Visa multilateral interchange fees, in one of the largest cases ever brought before the CAT.
  • Acting on behalf of over 12,000 current and former workers at Tesco in a claim against the supermarket for equal pay which is potentially worth up to £600m.
  • Acting for students in group claims against 22 universities for cancelled, disrupted and subpar teaching, as well as limited or no access to facilities as a consequence of the universities’ response to industrial action and COVID-19, in one of the highest profile ongoing group actions.

Milberg London

Milberg London’s group litigation practice, which acts for claimants in a broad range of cases, was founded in 2020 by a team which moved over from Mishcon de Reya LLP to set up a UK offering for US leader Milberg Phillips Grossman LLP. Individuals within the team appear on the steering committees of group actions brought against Vauxhall and Mercedes, and have notably launched a high-profile competition case against Sony Playstation. James Oldnall leads a team which includes ‘strong personalities’ and is ‘user friendly’. ‘Tenacious, bright and pragmatic’ founding partner Polly Blenkin is integral to the team which continues to expand, with the arrival of Robert Schultz from Baker Botts (UK) LLP in March 2023, Hadley Zielonka and Nicola Little from Shoosmiths LLP in September 2022.

Practice head(s):

James Oldnall

Other key lawyers:

Polly Blenkin; Nicola Vinovrški; Robert Schultz; Hadley Zielonka; Nicola Little


‘Strong personalities and user friendly.’

‘Polly Blenkin is tenacious, bright and pragmatic.’

‘They bring energy and drive to the process and have a good grasp of technology.’

Work highlights

  • Acting on the Steering Committee leading the emissions group action against Vauxhall and related defendants.
  • Acting on a representative action against Sony PlayStation for approximately £5 billion for breaches of competition law on behalf of thousands of consumers.

Stephenson Harwood

Stephenson Harwood fields a ‘excellent team with a relentless focus on getting clients results', with particular strength in private enforcement and group litigation. Its client roster consists of hotel groups, leading retailers and universities, and technology companies. The practice is led by Genevieve Quierin, described as a ‘brilliant litigator, a savvy strategist and a superb communicator‘. The team continues to expand, with the arrival of Dan Smith from Latham & Watkins in June 2022, Michael Bywell from Hausfeld & Co LLP in January 2023, and Peter Dalton from Herbert Smith Freehills LLP in February 2023. Ben Sigler sustains a focus on the financial and technology sectors.

Practice head(s):

Genevieve Quierin

Other key lawyers:

Dan Smith; Michael Bywell; Peter Dalton; Ben Sigler


‘Genevieve Quierin is a superstar: a brilliant litigator, savvy strategist and a superb communicator, who is also genuinely lovely person.’

‘An excellent team with a relentless focus on getting clients results. Excellent on legal strategy and maintaining a clear perspective on the key issues in litigation.’

‘Genevieve Quierin is an absolute star with a remarkable appetite for detail while maintaining a clear sense of overall strategy.’

‘Gen Quierin is extremely responsive, thoughtful, and does a great job in leading the team. She understands our industry, the complexities of the case, and is readily accessible.’

Key clients


Intercontinental Hotel Group

Hilton Hotels

WorldRemit Limited

3 (Hutchison Telecom)


Welcome Break



BMW Group Financial Services

The Savoy Hotel

Superdry plc

Levi Strauss

16 leading UK universities (including King’s College London, London School of Economics and Political Science, Imperial College of Science, Technology and Medicine, University of Leeds and University of Manchester)

Lebara Mobile

Work highlights

  • Representing over 1,900 corporate claimants in group claims brought against Mastercard and Visa, totalling approximately £1.5 billion. These clients include WorldRemit, Henderson & Jones, Lebara Mobile, 3, Bet365, Hilton, IHG and numerous global hotel chains, high street and online retailers, restaurant chains, travel companies, arts and entertainment companies, airlines, ticketing companies and others.
  • Representing Hillside (Shared Services) Limited and others (whose claims were issued in 2017) in interchange reimbursement claims against Visa and MasterCard in two separate sets of proceedings.
  • Acting for Alpha Bank Cyprus Ltd, Bank of Cyprus Public Company Limited and various credit acquiring companies in relation to a large number of claims based on alleged ‘mis-selling’ brought in the UK and Cyprus, in group actions involving hundreds of parties.

Edwin Coe LLP

Edwin Coe LLP fields a ‘lean and nimble team which punches well above its weight in heavy duty commercial litigation', with over 30 years of experience in group claims across a wide array of sectors. Public law litigation is a key strength of the practice, which notably acted on the Post Office litigation concerning sub-postmasters. ‘Charming and totally switched-onDavid Greene, a former President of the Law Society, leads the team that consist of ‘very efficient and perceptiveZahira Hussain, both with a wealth of experience representing claimants in collective actions. Other noted practitioners within the team include the ‘very hard workingThomas Johnson, and Canadian-qualified senior associate Fred Sheppard.

Practice head(s):

David Greene

Other key lawyers:

Zahira Hussain; Thomas Johnson; Fred Sheppard


‘Lean and nimble team, which punches well above its weight in heavy duty commercial litigation. They have particular expertise on claimant side mandates in group actions.’

‘Thomas Johnson is very hard working, cuts through issues, and gets the practicalities of claimant side group litigation.’

‘One of the firm’s most outstanding qualities is their ability to handle complex issues at the intersection of various fields of law (e.g., corporate and finance) and to use their vast collective experience in solving complex multi-jurisdictional problems.’

‘I’ve had a pleasure of working with David Green and Frederick Sheppard for several years. I am particularly impressed by their ability to identify and address quickly the most pressing issues in very complex transactions involving multi-layer corporate structures. And one of the qualities that stands out most is their almost instant availability for discussion of urgent matters despite their significant workload.’

‘The firm has considerable experience of group litigation and knows how to enter into billing and funding arrangements that work for both clients and the firm itself.’

‘David Greene is a very well known legal figure – a charming and totally switched on solicitor who is aware of and often ahead of the trends in litigation. Other notable individuals that I have dealt with are Zahira Hussain who is quietly very efficient and perceptive; and Fred Sheppard who I found to be totally on the ball.’

Work highlights

  • Advising a group of 150 claimants in relation to their claim for damages and interest against various truck manufacturers, following a finding by the European Commission of a price-fixing cartel.
  • Representing the Claimants who invested in, and became members of the Eclipse Scheme. The Defendant developed, marketed and implemented the Eclipse Scheme which was sold to the Claimants as an opportunity to invest in transactions with Disney in relation to film rights. The transactions entered into by the Eclipse Partnerships with Disney were a fraud. The value of the claim is £1.3billion.
  • Representing consumers arising from the misspelling of Spanish timeshares. The claim is valued in excess of £8million.

Hugh James

Environmental nuisance, industrial disease, and product liability claims are all mainstays of the group litigation department at Hugh James, which also has 'unrivalled experience of litigating domestic environmental group actions'. Neil Stockdale, who heads the firm’s financial mis-selling team, has an 'instinctive grasp for the core issues, and an excellent feel for when to fight and when to settle'; he works in tandem with Mark Harvey, who has a 'longstanding and deserved reputation as a market leader' and has been representing claimants in product liability claims for over four decades.

Practice head(s):

Neil Stockdale

Other key lawyers:

Mark Harvey; Kathryn Singh; Rebecca Andrews; James Gibson; Stephanie Eedy; Kimberley Sutton


‘Hugh James has unrivalled experience of litigating domestic environmental group actions, spanning both common law nuisance and actions based on statute (in particular Part I of the Land Compensation Act 1973).

‘Rebecca Andrews is always across both the detail and the strategic and tactical issues for a case, including matters of a highly technical nature.’

‘An innovative team who take cutting edge cases and are fearless.’

‘Mark Harvey has a longstanding and deserved reputation as a market leader.’

‘Kathryn Singh has extensive experience, is highly professional and knowledgeable and is an effective team player.’

‘James Gibson has considerable experience and knowledge in this specialist area.’

‘Stephanie Eedy – good knowledge of the law and procedure. Particularly good at putting a group claim together and handling claimant committees.’

‘Kimberley Sutton is experienced at gathering evidence from regulatory authorities, claimants and others to establish a robust claim.’

Irwin Mitchell

Irwin Mitchell is known as a ‘genuine national leader for technical know-how and experience in group litigation’, with a pre-eminent practice in claims related to defective products, medical negligence, and travel illness. Cases undertaken are often highly publicised, with the team notable having acted on the Boeing 737 claims and Lariam claims brought against the Ministry of Defence. The leadership of the team is split four ways, with Tim Annett, Sallie Booth, David Johnston-Keay  and senior associate Jatinder Paul  all sitting at the helm of the practice. Also of note is Natalie Truman, who is commended for her clinical negligence work, and is ‘great in group claims’.

Practice head(s):

Tim Annett; Sallie Booth; David Johnston-Keay; Jatinder Paul

Other key lawyers:

Natalie Truman


‘Irwin Mitchell is a genuine national leader for technical know-how and experience in group litigation.’

‘The team, led by Jatinder Paul, is always willing to pursue difficult group cases and fight their clients’ corner.’

‘Jatinder Paul has a depth of experience and a breadth of knowledge in group claims.’

‘Irwin Mitchell have vast experience in group litigation internationally as well as domestically. They have the expertise and resourcing to convene very large group claims and they generally lead the litigation where other firms of solicitors are also involved. The spread of offices nationally is a great help to provide relatively local support to clients.’

‘Sallie Booth is a very experienced litigator, who is very streetwise and knows all of the tricks of the trade. Her knowledge of group litigation is exemplary. Whilst she has a clear vision for the whole of the claim, she also keeps each individual claimant in mind, and looks out for each of their interest. She knows her stuff, and how to get the best outcome for her clients.’

‘Natalie Truman is one to watch in this department. She does some clinical negligence work as well, but she is great in group claims as well. She has taken the lead in managing the on-the-ground running of a group claim, and her attention to detail is amazing.’

‘This is an absolute star claimant team. The solicitors combine an excellent awareness of case strategy with a compassionate approach to their injured clients. Evidence of their stellar approach is the recent settlement in the pelvic mesh litigation.’

‘Sallie Booth: brilliant, super-commercial, tactical and an original thinker. Tim Annett: compassionate, thorough, rigorous and imaginative. Natalie Truman: a rising star at the firm with an unparalleled understanding of pelvic mesh litigation.’

Humphries Kerstetter LLP

Litigation boutique Humphries Kerstetter LLP acts on complex commercial disputes, with significant experience in the class action space. Competition group litigation is a key strength of the team, having notably acted in the high-profile MasterCard and Visa interchange fees proceedings. Solicitor-advocate Toby Starr leads the team, with specific expertise in financial misselling and fraud claims. Key to the practice are consultant Mark Humphries, who co-founded the firm in 2009 after a long career at Linklaters LLP, and managing partner James Russell.

Practice head(s):

Toby Starr

Other key lawyers:

Mark Humphries; James Russell


‘Toby Starr is a highly experienced litigator – unflappable, with a friendly manner and very easy to deal with.’

‘Toby Starr is a dogged and highly efficient partner who has an excellent understanding of competition practice and law.’

‘James Russell is exceptional. Highly competent and extremely knowledgeable.’

‘James Russell is undoubtedly one of the most able solicitors I have ever worked with. He combines a rigorous and analytic legal mind with a highly commercial approach to achieve great results for his clients.’

‘James Russell is excellent and hands on. Approachable and friendly.’

Work highlights

  • Acting for around 700 claimants in claims against MasterCard and Visa arising out of the interchange fees that the merchants incur.
  • Acting for the former director of Ofcom as the proposed class representative for 130,000 UK publishers of websites and mobile apps against Google.
  • Acting for a group of bondholders to investigate and pursue claims on their behalf arising out of the collapse of Blackmore Bond Plc.

Penningtons Manches Cooper LLP

The practice at Penningtons Manches Cooper LLP is ‘very experienced, trustworthy, and very capable in managing complex group actions’, acting for clients in claims linked to insurance, financial mis-selling,  and professional negligence. For one client, the team led by Clare Arthurs is ‘probably one of the best for group litigation‘. Noted practitioners include ‘extremely effective and knowledgeable’ David Niven and David O’Brien, who is commended for ‘leaving no stone unturned‘.

Practice head(s):

Clare Arthurs

Other key lawyers:

David O’Brien; David Niven; Nicole Blakey


‘David Niven directs overall strategy in a commercial way, leaving the detailed day-to-day conduct to his very competent and diligent team.’

‘The team is extremely pleasant to deal with, and extremely well informed. They are accessible. When they delegate to associates and others, they are well-chosen and extremely good quality.’

‘An excellent team that knows what it’s doing and does it well.’

The team is very experienced, trustworthy, and very capable in managing complex group actions.’

‘Extremely experienced team – probably one of the best in for group litigation. Very capable and committed to getting the best results for clients.’

‘David Niven is extremely effective and knowledgeable’

‘Nicole Blakey is extremely approachable and a good problem solver.’

‘David O’Brien is committed and leaves no stone unturned.’

Work highlights

  • Acting for a total of 27 clients in breach of stakeholder contract claims against 174 Law Solicitors Limited in relation to the alleged unlawful release of  client deposits in a property investment scheme.
  • Acting for around 50 NFU Mutual policyholders, pursuing unpaid business interruption claims against the insurer arising out of Covid-19 pandemic.
  • Acting for a group of 43 individual claimants in a complex group action against an architect (Stuart Duffy) and his company (The Keith Davidson Partnership Ltd).