David Thomas

Partner, Medical Negligence Lawyer

News Advisory: High Court Ruled that Family can Claim against the MoD

I cannot fault Simpson Millar's team of David and Chantelle. My clinical negligence case has been handled excellently with an outcome even better than anyone expected.

David and Chantelle have kept me updated with all the important details, and always got back to me fast with anything I needed to know.

David took the time to get to know me and was always careful in his communications about the case to not put more strain on me and to reassure me. I thoroughly recommend Simpson Millar's services.L.J.F
David Thomas is a gifted and committed lawyer who achieves excellent results for his clients.

David is based in London and heads his own team of medical negligence specialists who represent private clients and membership organisations. David has a particular expertise in Birth Injury claims and Cerebral and Erb's Palsy claims. He can often act for clients under Legal Aid or No Win, No Fee funding.

Case Studies And Articles

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Professional Memberships & Accreditations

David is a Fellow of the Chartered Institute of Legal Executives, and a Senior Litigator of the Association of Personal Injury Lawyers (APIL). He is also a Legal Aid approved supervisor, member of the Law Society and AvMA Clinical Negligence Accreditation Panels, and an Accredited Mediator.

David is recommended in the 2022 edition of Legal 500 & is a ranked Lawyer in Chambers Directory. 

The Legal 500 2022 edition comments:

"David Thomas’ handling of my case was totally exemplary, he took immense care to explain all the necessary details of my case to me, and interpreted the other side’s manoeuvres so that I did not get too stressed by it all. He really treated me as an intelligent participant in the case rather than in a patronising way, which I experienced from other firms I have dealt with."

"David Thomas is superb, handles very complex brain injury cases with minimum of fuss and gets great results for his clients."

"David Thomas undertakes heavy clin neg cases and brings a wealth of knowledge and experience to handling them. He strives always to achieve the best result for his client and his industry is endless. He is respected by opponents and is fearless in his approach to litigation. He has great empathy with parents in birth injury claims and understands the emotions in play in high value actions. He is a seasoned performer with a wealth of knowledge."

The Chambers Directory 2021 edition comments:

"He is brilliant - he handles cases really well and he is compassionate towards client. He is very approachable and very well respected by their families."


Legal 500, Law Society Clinical Accredited, APIL and Action against Medical Accidents logo




David is active in the legal press and has had articles published in the Solicitors Journal and Chartered Legal Executive Journal.  He has also appeared in the news and live radio on subjects such as Sepsis and other life-threatening conditions.


David joined Simpson Millar in 1997, and has extensive experience in Clinical and Medical Negligence claims.

Interests outside of work

David enjoys mountain walking, football, cricket and rugby. He is also a dedicated fundraiser for the Teenage Cancer Trust (TCT) and one of his proudest achievements is climbing the Tibet side of Mount Everest and raising over £6,000 for the TCT.

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