About

We are a select team of highly experienced legal costs consultants with a wealth of experience.

We specialise in actions against the state, predominantly Police & Prison Law, Public Law, Immigration and Judicial Review, as well as Family, Housing and all areas of general civil litigation.

Our three lead consultants have a combined experience of over 110 years. They have worked for some of the most respected solicitors in the UK, from small firms through to Magic Circle firms, dealing with all aspects of costs from routine civil litigation through to complex and novel cases at Supreme Court and European Court level and high profile multi-million pound commercial cases.

Notable cases include the Hillsborough Victims’ Misfeasance Litigation, in which Simon McCarthy was instructed by the Lead Solicitors for the Claimants (Saunders Law) and the Grenfell Tower Public Inquiry, in which Darren Hills was instructed. More recent cases include a Brexit related claim against The Electoral Commission and a number of cases for The Good Law Project, including a high profile claim against the Minister for the Cabinet Office concerning the award of government contracts in connection with the COVID-19 pandemic.

McCarthys Costs Limited

“McCarthys Costs are knowledgeable and extremely responsive. Their expertise is amongst the very best and their consultants are extremely skilled. Their approach is results-focused and they consistently achieve excellent outcomes.”

Stefano Ruis, Partner, Hickman & Rose

“We have instructed Simon in a number of complex cases, and have always appreciated his expertise and professionalism.  We will definitely use McCarthys again in the future.”

Alex Rook, Partner, Rook Irwin Sweeney

“Darren is our go to costs expert for housing disrepair cases.  His advice is good; his bills are excellent. Very easy to work with.”

Timothy Waitt, Partner, Anthony Gold

“At GT Stewart we have been instructing McCarthy’s since November 2022 and have found them to be consistently exceptional.  As a large firm we have to instruct a number of external costs drafting firms, and ...

Eve Sperring, Civil Billing Supervisor, GT Stewart

“I have instructed McCarthys Costs for over 15 years. I find their services and expertise second to none. I always feel my cases are in safe hands and I am confident in the knowledge that I will receive sound and expert advice ...

Andrew Michael Arthur, Associate, Irwin Mitchell

“McCarthys Costs get results! They are truly experts in what they do, their dedication and thoroughness is absolutely top-notch.  They just know and understand the key issues but are also very impressive in the way they ...

Rajea Ahmed, Partner, Miles & Partners

“Simon’s advice was invaluable on a complex costs matter. His advice was always clear, and his thoughtful and tactical approach resulted in a great outcome for the client. Simon was very responsive and a pleasure to work ...

Rosie Campbell, Associate Solicitor, Rook Irwin Sweeney

“For many years I’ve always been able to rely on Simon McCarthy.  He gives incisive and up-front advice, fights hard to achieve the best result and always knows how to steer us through the more tricky aspects of a bill. I would not hesitate to recommend him.”

Jag Bahra, Senior Associate, Saunders Law

“Simon is a delight to work with. He provides an excellent service, particularly on complex and specialist matters. His guidance has been invaluable at the conclusion of post-inquest civil claims.  He takes the matter from start to finish ...

Ruth Mellor, AAP and Inquests Solicitor

“Simon is personable, friendly, and incredibly knowledgeable. He breaks down advice so it’s easy to understand and is always approachable, no matter how big or small the question. His training and feedback are thorough and detailed, and have played ...

Phoebe O’Toole, Costs Lawyer, GT Stewart

“Simon is extremely helpful and knowledgeable. He has a way of breaking up even the most difficult of topics and explaining them in a way that isn’t intimidating or confusing. No question is ever too small or too big for him. And he is always there to advise.”

Paulina Marczuk, Costs Lawyer, GT Stewart