Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
Barry is a private client lawyer with over 30 years’ experience. His practice focuses on advising high net worth individuals and their families how best to arrange their affairs to best protect and organise them for future generations. This often involves advice on tax planning, wills and trusts (including their planning, creation, administration and winding-up). Barry also deals with the administration of substantial estates, often with an international element.
Throughout his career Barry has acted for a wide range of clients including authors, farmers, entrepreneurs, actors, historians, musicians, fashion designers, magazine editors and theatre producers and in relation to a number of landed estates.
Barry is a registered Trust and Estate Practitioner being a member of the Society of Trust & Estate Practitioners (STEP). He has written articles for respected legal journals (including Private Client Business) and the national press.
Barry specialises in drafting wills for both UK and non-UK-domiciled individuals, providing tax-efficient and tailored succession planning.
Experience
Barry handles all aspects of estate administration, including complex UK and international estates, advising executors on probate, tax issues, asset distribution, and cross-border compliance requirements.
Experience
Barry advises on inheritance tax planning and lifetime estate strategies, including asset protection, use of pension nominations, and life assurance policy trusts.
Experience
Barry advises on the creation, administration, and winding up of trusts, including trustee appointments, powers, and duties.
Experience
Barry provides expert advice on mental incapacity planning, including the preparation and registration of lasting powers of attorney, helping clients appoint trusted individuals to manage their affairs.
Experience
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Recognised by Chambers High Net Worth for Private Wealth Law 2021–2026
Recognised in Citywealth Leader’s List for 2025
Recognised by The Legal 500 for Personal Tax, Trusts and Probate 2019, 2022–2026
Recommended Tax and Trust Lawyer in The Spear’s 500 Tax Law Index 2020–2024
Member of the Society for Trust and Estates Practitioners (STEP)
“Barry Adamson is the best of private client: decades of experience and the sharp end of London tax and trusts. Barry Adamson is knowledgeable, approachable and great with clients.”
The Legal 500 2025
“Barry Adamson has an excellent grasp of complex matters, quick assimilation of information and gives sensible and pragmatic advice”
Chambers High Net Worth 2024
“Barry Adamson is extremely diligent and has professional international experience, which is wide and deep. That is essential for this kind of work.”
Chambers High Net Worth 2024
“Barry Adamson is a leading individual. Broad capability, good value, highly discrete.”
The Legal 500 2024
“I have huge respect for Barry, he understands complex matters, has a depth of experience and excellent empathy.”
Chambers High Net Worth 2025
“Barry is extraordinary – he goes above and beyond what you would expect from him and is extremely knowledgeable.”
Chambers High Net Worth 2025
“Professional, understanding of client needs with excellent communication skills. Barry Adamson, excellent service and attention to detail with such care and understanding to our clients’ needs.”
The Legal 500 2025
“Barry Adamson is extremely diligent and has professional international experience, which is deep and wide, and essential for this type of work. In cases of emergency Barry’s turnaround delivery is great.”
The Legal 500 2025
“Barry Adamson is extremely diligent and has professional international experience, which is deep and wide, is essential for this kind of work.”
The Legal 500 2024
“I value Barry Adamson’s experience, depth of knowledge and ability to cut through to the crucial point in his analysis. He is an excellent reader of family dynamics in potentially difficult negotiations.”
The Legal 500 2024
“Barry is very thorough and responsive, with a good understanding of the issues.”
Chambers High Net Worth 2023
“Barry is a superb lawyer who remains at the top of his game deep into a long and distinguished career.”
Chambers High Net Worth 2023
“Barry is a superb lawyer. He has a lot of experience and really gets to grips with what the client is looking for. He is very empathetic and is very good at translating that into technical legal advice.”
Chambers High Net Worth 2023
“Barry Adamson is very thorough and responsive. He always goes the extra mile for his clients.”
The Legal 500 2023
“Very flexible and good at collaboration. He has a wide range of expertise – UK tax and probate and international tax that enables him to provide a holistic service. Barry Adamson – meticulous in the field of probate.”
The Legal 500 2023
“I mainly work with Barry Adamson, a private client specialist, whom I have known for many years. Not only is he very technical and knows his subject backwards, he is also one of the nicest people you could hope to meet and clients love him”
The Legal 500 2023
“Barry Adamson is reliable, great expertise and able to provide accurate thorough advice promptly. He also provides efficient advice that is to the point as opposed to vague.”
The Legal 500 2023
“Barry Adamson is renowned in particular in this cross-border probate area. Mr Adamson has spent most of his working life at this subject because he loves it! Mr Adamson is extremely diligent and has professional experience which is both wide and deep internationally, which is essential for this kind of work.”
The Legal 500 2023
“I worked with Barry Adamson who brings many years of experience and excellent legal technical expertise to bear on difficult problems and goes the extra mile to resolve problems for his clients.”
The Legal 500 2023
“Barry is hugely experienced. The combination of considerable technical knowledge with charm and commercial sense makes him a serious operator.”
Chambers High Net Worth 2022
“Technically extremely strong and incredibly hard-working.”
Chambers High Net Worth 2022
“Barry Adamson of Keystone Law is ‘my go-to guy on all private client matters’.”
Chambers High Net Worth 2021
“He is very charming, very conscientious and extremely hard-working.”
Chambers High Net Worth 2021
“Absolutely outstanding – he brings a huge amount of clarity and insight to matters, he picks things up quickly and is very responsive. He is very solution-driven.”
Chambers High Net Worth 2021
Barry qualified as a solicitor in 1989. Prior to joining Keystone Law in 2019, he worked at the following firms: