
At Matrix Chambers, Catrin Evans KC and Ian Helme are acting on behalf of over 10,000 claimants in the Various Claimants v Grindr class action claim. The claim involves allegations of data protection and privacy breaches arising from sensitive personal data on the claimants' profiles being shared with third parties without their consent. In a separate matter, Edward Craven KC represented the claimant in O’Carroll v Meta, a high-profile challenge to Meta's processing of personal data for personalised advertising on Facebook. Among the junior end of chambers, Mariyam Kamil brings expertise in acting for claimants and defendants in data breach litigation.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- I've worked with Matrix across a number of different cases and they have strong experience in group privacy/data cases.
- The clerks are very responsive, friendly, and my favorite to work with.
- Matrix is very good when it comes to availability for urgent advice in this area.
- Alison Scanes, Chris Beard, and Nina Russell are the perfect clerking team. They appreciate urgency and sensitivities and are a pleasure to work with.
- Matrix Chambers is home to an outstanding and intellectually brilliant set of barristers who combine excellence with approachability and pragmatism.
- The clerks are responsive, friendly, and diligent.
Lawyers
Leading Silks
KCs at the very top of their field, with a long-established record of market-defining cases, and widespread endorsement from clients and peers. All silks appointed in the last two rounds are listed further below.


Sara Mansoori KC
Sara is the perfect mix of technicality and commerciality. She is on top of all the details and at the same time able to cut through them to get to the issue. Her advice is clear and commercial even when dealing with highly complex issues.

Lorna Skinner KC
Lorna is an outstanding advocate and an undoubted expert in data protection law. She is very easy to work with.

Jonathan Glasson KC
2025 Silks
KCs at the very top of their field, with a long-established record of market-defining cases, and widespread endorsement from clients and peers. All silks appointed in the last two rounds are listed further below.
Leading Juniors
Leading juniors are those with significant experience of key cases, strong market recognition from both peers and clients, and are seen as future candidates for silk.

Aidan Wills
Aidan is a brilliant barrister whom I trust completely. He is very intelligent, quick-thinking, and super hands-on. Clients also love him. His advocacy is elegant and persuasive, and his drafting is also excellent.

Mariyam Kamil
Mariyam is a rising star in data protection, libel, and privacy actions. She has exceptional research skills with an excellent eye for drafting.

Zoe McCallum
Zoe is extremely bright and has a very strong commercial sense.




