Department profile

Group Litigation

UK Bar Guide 2026 : All Circuits

Monckton Chambers

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Group Litigation - All Circuits

Band 1

What the Team is Known For

Monckton Chambers has built upon its revered competition law practice as a foundation for a significant offering in group litigation, and more particularly representative actions. This year, members of the set appeared in Le Patourel v BT, a collective action concerning abuse of dominance in the landline market, as well as Kent v Apple and Coll v Google, high-profile collective proceedings against big tech. Such instructions cement the set's reputation garnered from its involvement in leading cases such as Merricks v Mastercard. Sources report that the set has "the best competition barristers" who are "unsurpassed" in Competition Appeal Tribunal litigation.

Chris O'Brien is senior practice manager.

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Strengths

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Joint senior clerk John Keegan and practice manager James Mower are lovely to deal with.
Group Litigation respondentUK Bar
Monkton's clerking team are by far and away the most commercial and entrepreneurial team you will come across. Knowing the funding market as they do, they are willing to look at things commercially.
Group Litigation respondentUK Bar
Clerks are really helpful and responsive. When someone was not available, they were quick to suggest another barrister who was a good choice in a niche area of law.
Group Litigation respondentUK Bar
John Keegan is very good, he's always available and receptive, willing to have sensible conversations.
Group Litigation respondentUK Bar

Notable Practitioners

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Band 1
Band 1
Ronit Kreisberger
Ronit Kreisberger KC has led representative claimants to success in an impressive number of collective proceedings applications before the Competition Appeal Tribunal. Work highlights in this area include pioneering claims such as Le Patourel v BT and Kent v Apple.
Ronit is very, very good. She is a force of nature and can stand up to any other silk at the competition Bar.
Group Litigation respondentUK Bar
She's fantastic. She gets behind you and your client, has a real mastery of the law and great group litigation experience.
Group Litigation respondentUK Bar
Ronit is really excellent; she is all over the economics and really sharp.
Group Litigation respondentUK Bar
A formidable silk, a brilliant and highly accomplished advocate and a hugely dedicated team leader. She has great authority in court and an excellent trial advocacy manner.
Group Litigation respondentUK Bar
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Band 2
Band 2
Anneli Howard
Anneli Howard KC is deeply involved in consumer group litigation arising in the competition field. She has notable experience in applications for collective proceedings orders on an opt-out basis, on both the claimant and defendant sides.
She made good points, was clearly on top of her subject. The judge really engaged with what she was saying.
Group Litigation respondentUK Bar
She's terrific and does a lot in this area.
Group Litigation respondentUK Bar
Anneli is brilliant to work with and offers clear team leadership.
Group Litigation respondentUK Bar
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Band 2
Band 2
Paul Harris
Paul Harris KC is a leading figure in the area of competition collective proceedings, having taking the helm in the landmark case of Merricks v Mastercard and subsequent cases, including the Gutmann claim concerning rail ticketing.
One of the best advocates. He's extremely effective, unafraid and very persuasive.
Group Litigation respondentUK Bar
His name strikes fear into the heart of the opposition. He obviously has the respect of the court. When the need for success is absolute, clients turn to Paul Harris.
Group Litigation respondentUK Bar
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Band 2
Band 2
Philip Moser
Philip Moser KC has acted in a number of leading collective action claims in the competition field, including the Gutmann boundary fares claim.
He is a class act and a smooth and charming advocate.
Group Litigation respondentUK Bar
His key strength is that he is incredibly diplomatic which means that he commands a strong voice to joint defence groups.
Group Litigation respondentUK Bar
A very experienced advocate, one of the best.
Group Litigation respondentUK Bar
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Band 3
Band 3
Anneliese Blackwood
Anneliese Blackwood is an experienced competition law junior. She has played a key role in high-profile collective proceedings including Merricks v Mastercard and Gutmann v LSER.
She is impressive.
Group Litigation respondentUK Bar
A good advocate who works hard and delivers for us - a good team player.
Group Litigation respondentUK Bar
She's silk standard, she's trusted. The CAT is a big stage and you have to be on your game, and she is on her game - I really rate her.
Group Litigation respondentUK Bar
Anneliese is very smart and brings in particular expertise from a range of class actions. She worked very well with the team and is dependable and consistent.
Group Litigation respondentUK Bar
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Band 3
Band 3
Gerry Facenna
Gerry Facenna KC is recognised for his strong expertise in data and competition-related group litigation and collective actions. He has typically represented the claimant groups or representative claimants in such cases.
A great advocate.
Group Litigation respondentUK Bar
Gerry is very straight-talking and doesn't sit on the fence. He is very commercially minded and able to grasp facts very quickly.
Group Litigation respondentUK Bar
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Band 3
Band 3
Jon Turner
Jon Turner KC is a leading barrister in the competition space with a robust practice in collective actions and consumer group claims. He acts for both claimant groups and defendants, and is instructed in major litigation such as the Trucks cartel litigation.
He just sifts through, he's a great strategist and is able to pull at the different elements together. He is so clear in his drafting and incredibly sophisticated on his feet as well. He is superb.
Group Litigation respondentUK Bar
He is brilliantly clever and analytical, with a calm, client-friendly style.
Group Litigation respondentUK Bar
Jon really is a powerhouse. Fantastic on his feet, his advocacy stands out.
Group Litigation respondentUK Bar
Jon is a guru in the field and unfailingly a brilliant advocate. A leader, and can turn his hand to anything brilliantly.
Group Litigation respondentUK Bar
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Band 3
Band 3
Nikolaus Grubeck
Nikolaus Grubeck has a strong collective actions practice spanning competition, data protection and human rights law. He has acted for claimant groups and representative claimants in a number of novel claims including Le Patourel v BT.
Nikolaus got up to speed in record time, is across the highly technical details of the case, and uses his pen as a weapon. I highly recommend him.
Group Litigation respondentUK Bar
Nikolaus has really good judgement. He is really clam and he produced some really high-standard written work.
Group Litigation respondentUK Bar
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Band 4
Band 4
Daniel Beard
Daniel Beard KC is a renowned figure of the competition Bar who has played a role in leading competition class actions since the inception of that regime, where he continues to be heavily involved in opt-out and opt-in actions.
Daniel is super bright. He is a really good cross-examiner and has a really good way in engaging with the tribunal. He is great on his feet and able to pivot.
Group Litigation respondentUK Bar
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Up and Coming
Up and Coming
Antonia Fitzpatrick
Antonia is an up-and-coming junior barrister in the competition group actions space. She is instructed in the set's high-profile cases, including Kent v Apple, and is developing a strong practice in this field.
She's great. She's operating at a level above her seniority and is really up and coming.
Group Litigation respondentUK Bar
Antonia is well beyond her call year. She is across the details, understands the complicated economics, and produces high-quality drafting in short order.
Group Litigation respondentUK Bar
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Up and Coming
Up and Coming
Will Perry
Will Perry is an up-and-coming junior in the group litigation space, where his busy competition practice makes him an asset to competition group claims. He has acted for claimants and defendants in collective proceedings.
Will is super responsive and really positive to work with. Will is very good in competition claims and class actions. He has genuine expertise in that space.
Group Litigation respondentUK Bar
Will is an up-and-coming junior.
Group Litigation respondentUK Bar
Will really thinks around issues. He is able to understand the technological defenses that arise on these cases. He's got that brain to him, and a good understanding of platform economics.
Group Litigation respondentUK Bar
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