Department profile
Henderson Chambers

Group Litigation

UK Bar Guide 2026 : All Circuits


Henderson Chambers

Rankings

Chambers Review

Provided by Chambers

Group Litigation - All Circuits

Band 1

Band 1


What the Team is Known For

Henderson Chambers is a noted leader in the field of group litigation. Its noted depth, breadth and longevity in this field grounds its celebrated reputation for "excellence at all levels" and its "unparalleled bench in group litigation," according to sources. The set's barristers routinely appear in the highest-profile and most complex group litigation. Recent examples include members appearing on both sides of the Dieselgate emissions litigation, members' involvement in the claims against AstraZeneca relating the COVID-19 vaccine, and in the claims arising from the Grenfell Tower Fire.

Jason Housden is chambers director.

Strengths

Provided by Chambers

  • Clerks are unfailingly understanding when we have slow-paying clients, and they're flexible and understand the pressures we're under.

    Group Litigation respondentUK Bar
  • Nothing is too much trouble for the clerking team. The clerks are a great team, loyal and hard-working.

    Group Litigation respondentUK Bar
  • They have a first-rate clerking team that are supportive of solicitors' and clients' demands.

    Group Litigation respondentUK Bar
  • The clerks provide a very good service, are very pleasant to deal with, and go above and beyond to assist their barristers and instructing solicitors.

    Group Litigation respondentUK Bar
  • At Henderson the clerks deal with you as if they value your business and want to help. They remember the people in your team and are willing to be flexible.

    Group Litigation respondentUK Bar

Notable Practitioners

Provided by Chambers

  • Star IndividualsCharles Gibson
    Star IndividualsCharles Gibson

    Charles Gibson

    Charles Gibson KC is a noted leader in the field of group litigation. He is often sought out for his expertise in handling environmental law disputes and mass torts.

    • The godfather of this work.

      Group Litigation respondentUK Bar
    • The doyen of product liability and group actions. A master of strategy and a go-to silk for defendants in product liability group claims.

      Group Litigation respondentUK Bar
    • A titan in product liability and group litigation.

      Group Litigation respondentUK Bar
    • Charles is excellent on his feet.

      Group Litigation respondentUK Bar
    • Charles brings a lot of gravitas and he makes a significant contribution in a relatively short time.

      Group Litigation respondentUK Bar
  • Star IndividualsGeraint Webb
    Star IndividualsGeraint Webb

    Geraint Webb

    Geraint Webb KC has extensive experience of group litigation, representing business defendants in claims typically concerning environmental or human rights breaches.

    • Geraint is really the market leader in product liability and group actions with a real international specialist focus.

      Group Litigation respondentUK Bar
    • Geraint is extremely bright and has very sound judgement.

      Group Litigation respondentUK Bar
    • Geraint has enormous gravitas, the team really admire and respect everything he says.

      Group Litigation respondentUK Bar
    • Geraint would be my go-to for any product liability matter. He is always well prepared, makes time; his advice is considered; his writing is excellent.

      Group Litigation respondentUK Bar
    • Geraint is a brilliant tactician. He is a tremendous reassuring presence for clients; he is unfazed and so calm and instils confidence in the team.

      Group Litigation respondentUK Bar
  • Band 1Adam Heppinstall
    Band 1Adam Heppinstall

    Adam Heppinstall

    Adam Heppinstall KC has group litigation expertise which is called upon in a notably broad selection of cases, including consumer, medical product and environmental actions.

    • Adam is both exceptionally intelligent and personable, which makes him a hit with clients.

      Group Litigation respondentUK Bar
    • Adam impresses with his ability to seize issues quickly.

      Group Litigation respondentUK Bar
    • Adam dealt with novel areas of law very effectively and brought the judge along well.

      Group Litigation respondentUK Bar
    • Adam is a superstar!

      Group Litigation respondentUK Bar
    • Adam is an excellent advocate.

      Group Litigation respondentUK Bar
  • Band 1Malcolm Sheehan
    Band 1Malcolm Sheehan

    Malcolm Sheehan

    Malcolm Sheehan KC is a leader in the field of medical product liability litigation, and is in constant demand to defend pharmaceutical companies in major group claims.

    • Malcolm is very client-friendly, sees the bigger picture but also knows his cases inside-out. A real trusted adviser.

      Group Litigation respondentUK Bar
  • Band 1Ognjen Miletic
    Band 1Ognjen Miletic

    Ognjen Miletic

    Ognjen Miletic has demonstrated his group litigation expertise in cases including the vehicle emissions mass claims and several international business human rights actions.

    • Ognjen is very bright and diligent. He does great written work and is very user-friendly. A really good member of any group litigation team.

      Group Litigation respondentUK Bar
    • Ognjen is one of my favourite juniors, superb, bright, quick and a delight to work with.

      Group Litigation respondentUK Bar
    • He has great judgement, is so responsive, enormously user-friendly. He had a very nice tone with the judge as well.

      Group Litigation respondentUK Bar
    • Ognjen is a subject matter expert and not everyone can claim this. He is good on procedure.

      Group Litigation respondentUK Bar
    • Ognjen has been absolutely fantastic; he really knows his stuff and is really calm and responsive. A real resource and we respected his view. He was so good on the detail and fine on his feet.

      Group Litigation respondentUK Bar
  • Band 1Oliver Campbell
    Band 1Oliver Campbell

    Oliver Campbell

    Oliver Campbell KC has a wealth of experience handling all manner of group claims, including data privacy and consumer protection litigation. He has notable expertise concerning representative actions.

    • Simply the best for group litigation, fantastic judgement, and a highly effective advocate.

      Group Litigation respondentUK Bar
    • Oliver is hugely experienced and well-known as a leading light in the group litigation world. An excellent advocate and tactician.

      Group Litigation respondentUK Bar
    • A doyen of group litigation.

      Group Litigation respondentUK Bar
    • Oliver is the go-to silk for complex group litigation matters. He provides sound, commercially astute advice.

      Group Litigation respondentUK Bar
    • Oliver is the calm and intellect you need in every storm. A formidable player in the field.

      Group Litigation respondentUK Bar
  • Band 1Patrick Green
    Band 1Patrick Green

    Patrick Green

    Patrick Green KC has acted on the claimant side of a number of prominent group claims, notably Bates and Others v Post Office, and various large-scale consumer cases.

    • Patrick is incisive and great on his feet. One of the go-to names in group litigation.

      Group Litigation respondentUK Bar
    • Patrick has good commercial nous on what it takes to get a successful claim off the ground. He is dogged and a brilliant advocate.

      Group Litigation respondentUK Bar
  • Band 1Prashant Popat
    Band 1Prashant Popat

    Prashant Popat

    Prashant Popat KC has longstanding experience in product liability and personal injury group claims, particularly those concerning medical products. He has also been active at the centre of the vehicle emissions litigation.

    • He is peerless in this field.

      Group Litigation respondentUK Bar
    • Prashant is an excellent team player who leads teams to deliver the right strategy in large-scale group litigation to suit the needs of the client.

      Group Litigation respondentUK Bar
    • Prashant is an absolute class act, very user-friendly, a skilled advocate, and strategic.

      Group Litigation respondentUK Bar
    • He's an absolute superstar. He does an absolutely phenomenal job of pulling together large teams to drive fantastic outcomes for clients. I really really rate him.

      Group Litigation respondentUK Bar
  • Band 1Toby Riley-Smith
    Band 1Toby Riley-Smith

    Toby Riley-Smith

    Toby Riley-Smith KC is widely instructed to defend medical manufacturers and those in other industries in consumer group claims. He has acted in the vaginal mesh litigation, among other notable matters.

    • Toby is so eloquent and an amazing tactician.

      Group Litigation respondentUK Bar
    • He is extremely good.

      Group Litigation respondentUK Bar
    • Toby is very charming, emotionally astute and will approach discussions with a very measured way. He commands respect.

      Group Litigation respondentUK Bar
  • Band 2Andrew Kinnier
    Band 2Andrew Kinnier

    Andrew Kinnier

    Andrew Kinnier KC is an experienced defence-side advocate in group actions involving product liability claims. He has acted in emissions cases in the automotive sector as well as pharmaceutical and medical products cases including the vaginal mesh litigation.

    • Andrew is highly charismatic and exceptionally capable of distilling and defusing complexity. His advocacy skills are very strong, demonstrated by successful outcomes in high-stakes cases.

      Group Litigation respondentUK Bar
  • Band 2Henry Warwick
    Band 2Henry Warwick

    Henry Warwick

    Henry Warwick KC has acted in an impressive array of group claims including the Post Office Horizon claims and the Volkswagen NOx and Seroxat litigation. He has experience representing claimant groups and defendants.

    • Henry is one of the leaders in the group action space, he's commercial and very easy to work with.

      Group Litigation respondentUK Bar
    • Henry is very client-oriented and gets up to speed with everything. He is just a joy to work with and makes the process very fun.

      Group Litigation respondentUK Bar
    • Henry is a pleasure to work with and delivers results.

      Group Litigation respondentUK Bar
  • Band 2Kathleen Donnelly
    Band 2Kathleen Donnelly

    Kathleen Donnelly

    Kathleen Donnelly KC is a hugely able barrister who is entrusted with leading roles in major group litigation. She has been instructed in numerous high-profile group claims spanning consumer, employment and environmental law.

    • Kathleen is an absolute superstar and is so good and judges love her. She defuses tension in a room and her demeanor is excellent.

      Group Litigation respondentUK Bar
    • Kathleen is a brilliant lawyer. She understands the commercial aims in large-scale litigation and adjusts to match the clients. She is able to deliver defence strategies that set her apart.

      Group Litigation respondentUK Bar
    • Kathleen is just a joy to deal with. She is emphatic but also razor-sharp - she gives you the strategy as well as listening to the team.

      Group Litigation respondentUK Bar
    • Kathleen is a marvelous advocate. Her cross-examination is second to none. She is tremendous.

      Group Litigation respondentUK Bar
    • Kathleen is an absolute trailblazer. She's very easy to work with and very hands-on. She is an absolute master of the detail and a ferocious advocate.

      Group Litigation respondentUK Bar
  • Band 2Rachel Tandy
    Band 2Rachel Tandy

    Rachel Tandy

    Rachel Tandy is extremely well qualified to manage large group claims in the consumer or product liability field, having acted on the claimant side of numerous matters arising out of the vehicle emissions scandal.

    • I wouldn't want any other senior junior on my cases: she's super bright and pragmatic.

      Group Litigation respondentUK Bar
    • She is excellent on product liability and group litigation.

      Group Litigation respondentUK Bar
  • Band 2Thomas Evans
    Band 2Thomas Evans

    Thomas Evans

    Thomas Evans is an impressive senior junior with significant expertise in high-profile group litigation. He regularly features in group litigation arising from consumer and product liability issues.

    • Tom is a really strong advocate when it comes to consumer-related issues in motor vehicle finance. He's a really strong junior for group litigation.

      Group Litigation respondentUK Bar
    • Tom is consistently brilliant; everyone wants him on group litigation.

      Group Litigation respondentUK Bar
    • Tom is brilliant, the team say that he's got two brains for our one. He is very responsive, detailed and clients like him.

      Group Litigation respondentUK Bar
  • Band 3Lucy McCormick
    Band 3Lucy McCormick

    Lucy McCormick

    Lucy McCormick has significant experience in high-profile group actions. McCormick has acted in vehicle emissions and medical product claims, among many other matters.

    • Lucy is very efficient and clearly bright.

      Group Litigation respondentUK Bar
    • Lucy is tactically astute, forensically fierce, and totally trusted by silks and clients.

      Group Litigation respondentUK Bar
    • Lucy is a fantastic team player - incisive, responsive and reliable.

      Group Litigation respondentUK Bar
    • Lucy is fantastically bright. She's a real leader on AI in the automotive industry.

      Group Litigation respondentUK Bar
  • Band 4Celia Oldham
    Band 4Celia Oldham

    Celia Oldham

    Celia Oldham is a much sought-after junior who has significant experience in product liability-related group litigation.

    • Celia was brilliant on detail and supportive.

      Group Litigation respondentUK Bar
    • Celia is just fabulous. She has an extraordinary ability to know in advance how other lawyers are thinking. She is amazingly bright, very calm and hugely knowledgeable.

      Group Litigation respondentUK Bar
    • Her instincts are spot-on, a perfect junior for high-stakes group work.

      Group Litigation respondentUK Bar
    • Celia is very technically able, she is very thorough and easy to deal with.

      Group Litigation respondentUK Bar
  • Band 4James White
    Band 4James White

    James White

    James White has a well-developed group litigation practice with particular emphasis on competition and consumer disputes which has seen him represent clients before the Competition Appeal Tribunal and the Court of Appeal.

    • James is a brilliant junior.

      Group Litigation respondentUK Bar
  • Band 4James Williams
    Band 4James Williams

    James Williams

    James Williams has a busy group litigation practice which focuses on product liability, particularly in relation to pharmaceutical products, and industrial disease. He is instructed on high-profile cases including the diesel emissions litigation and the litigation concerning AstraZeneca's COVID-19 vaccine.

    • James demonstrates a thorough understanding of group litigation dynamics. His advocacy skills are outstanding, presenting compelling arguments and achieving favourable outcomes in group litigation.

      Group Litigation respondentUK Bar
    • James is a hugely good practitioner, clever and hard-working.

      Group Litigation respondentUK Bar
  • Up and ComingFreya Foster
    Up and ComingFreya Foster

    Freya Foster

    Freya Foster is an up-and-coming junior in the group litigation sphere. She is experienced in group litigation concerning environmental law and product liability.

    • Freya has a great grasp of detail and is operating above her level of call.

      Group Litigation respondentUK Bar
    • Freya has a growing reputation in the group action field and is very able.

      Group Litigation respondentUK Bar
  • New SilksJames Purnell
    New SilksJames Purnell

    James Purnell

    James Purnell has a strong group litigation practice that sees him handling injury-focused claims. He has considerable knowledge of medical device claims.

Ranked Barristers at Henderson Chambers (20)

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