Claire van Overdijk KC

Year of Call:
2003
Year of Silk:
2023
Direct Access:
Yes

Claire van Overdijk KC has extensive experience in contentious and non-contentious trust and estate disputes as well as commercial and civil litigation.

As a specialist in the resolution of complex disputes, her practice is principally contentious extending to advocacy, strategic expertise and tactical advice in domestic and multi-jurisdictional high-value litigation. As an expert in private international law, she is also well equipped to advise on cross border elements that arise in these fields.

Claire also has a broad private client practice advising on domestic and offshore wealth structuring and estate planning matters including the creation, restructuring and termination of trust structures, matters relating to trust administration, as well as probate and testamentary issues. She has extensive experience with global businesses, financial institutions, public bodies, trustees, beneficiaries, settlors, protectors, private individuals and families. She is also a recognised expert in the field of mental capacity law and an editor of “The International Protection of Adults” (Oxford University Press), which provides comparative analysis of private international law rules relating to mental capacity law and the Hague Convention on the International Protection of Adults.

Claire is a member of the STEP Bermuda Committee. She also sits on the Bermuda Mental Health Tribunal and the Bermuda Human Rights Tribunal. She is a full member of STEP and a member of the Chancery Bar Association. Claire was also called to the Bermuda Bar in 2022 and is a Partner in the Dispute Resolution team at Appleby in Bermuda.

Claire is ranked by Chambers and Partners High Net Worth 2024: Offshore Trusts Directory and is also featured in Tier 1 of the Private Client Global Elite Directory, which is a respected global directory of the world’s top private client and trusts and estates litigation talent. She is also ranked by Chambers & Partners (UK Bar) and Legal 500 (UK) for her expertise in mental capacity law.

Expertise

Notable Private Client & Trusts cases


MN v OP & Ors [2019] EWCA Civ 679

Here the Court of Appeal handed down guidance on anonymity in applications under the Variation of Trusts Act 1958. Claire was appointed by the Attorney General as advocate to the court.

Parsonage (acting as personal representative in the estate) v Parsonage & Ors [2019] EWHC 2362 (Ch)

A challenge to the validity of a will on the basis of testamentary capacity and lack of knowledge and approval. Claire successfully represented the executor of the estate.

Edgar Harrison, YY and ZZ v Ava Vidal [2018] EWHC 2738 (Civ)

Application under the inherent jurisdiction and s.116 of the Senior Courts Act 1981 to remove the biological mother’s entitlement to personal representative status under r.22 of the Non-Contentious Probate Rules 1987. Claire successfully represented interested family members.

Various Incapacitated Persons and the Appointment of Trust Corporations as Deputies [2018] EWCOP 3

The COP set down important guidance for trust corporations that apply to be appointed as deputy for incapacitated persons. Claire was instructed by the Public Guardian.

Re the estate of Baldev Kohli (deceased) (2018)

Claire advised the executor of the estate in this domicile dispute brought under the 1975 Act by the claimed child of the deceased.

Kebbeh v Farmer & Ors [2015] EWHC 3827 (Ch)

1975 Act claim involving a domicile dispute (UK/Gambia) and recognition of an Islamic divorce carried out in the Gambia. Claire successfully represented the executor of the estate.

Related updates

Claire van Overdijk KC is regulated by the Bar Standards Board (BSB) and holds a current practising certificate. If you are not satisfied with the service provided, please click here.

"She is very thoughtful and comes armed with a wide range of expertise."

Court of Protection: Property & Affairs, Chambers & Partners 2025

'Claire is simply the best and first class. She is an outstanding advocate with a great depth of talent and an ability to absorb vast amounts of information under pressure. Her attention to detail is impressive and commands respect from her opponents and clients.'

Court of Protection: health and welfare, Legal 500 2025

"Claire is very thoughtful, hard-working, knowledgeable, sensible and well balanced. She is a pleasure to deal with."

Court of Protection: Health & Welfare, Chambers & Partners 2024

"She clearly knows the law inside and out. She is a master of law in this area."; "Claire knows how to win an argument. She is thorough and has attention to detail."; "She is very thorough in her case preparation and a good advocate."

Court of Protection: Property & Affairs, Chambers & Partners 2024

“Claire is friendly, dedicated and passionate about her work.”

Court of Protection: Health & Welfare, Chambers and Partners 2023

“She works incredibly well with her instructing solicitors.”

Court of Protection: Health & Welfare, Chambers and Partners 2023

“Her client care is exceptional - she really knows how to diffuse anxiety.”

Court of Protection: Property & Affairs, Chambers & Partners 2023

"An articulate and persuasive advocate with incredible intellectual ability, who goes the extra mile for her clients."

Court of Protection and Community Care, Legal 500 2023

"She has a really good breadth of knowledge."

Court of Protection: Property & Affairs, Chambers & Partners 2022

"She is a meticulous, compassionate and ferocious barrister." "Very experienced and well regarded."

Court of Protection: Health & Welfare, Chambers & Partners 2022

"An articulate and persuasive advocate with incredible intellectual ability, who goes the extra mile for her clients."

Court of Protection, Legal 500 2022

"Has a keen eye for detail and cuts through the case to get to the point. She is incredibly good in cross-examinations."

Court of Protection: Health & Welfare, Chambers & Partners 2021

"She is exceptional in cases involving complex overlapping issues of jurisdiction, finance, or particularly difficult family dynamics."

Court of Protection: Health & Welfare, Chambers & Partners 2020

"She’s really smart and is an expert in jurisdictional issues."

Court of Protection:Health & Welfare, Chambers & Partners 2020

"She is efficient, precise, passionate and absolutely dedicated to getting the best for her clients."

Court of Protection: Health & Welfare, Chambers & Partners 2021

"Really personable but also terrifically strong on technical matters. She takes a pragmatic and sensible approach."

Court of Protection: Health & Welfare, Chambers & Partners 2021

"Calm, methodical and reasonable in her submissions to the court. She’s someone who wants to resolve a case in the most efficient way."

Court of Protection: Property & Affairs, Chambers and Partners 2021

"Claire provides succinct and pragmatic advice and is particularly good on cases involving cross-border aspects."

Court of Protection: Property & Affairs, Chambers and Partners 2021

"Is a great advocate, a clear communicator and excellent when it comes to providing technical and practical legal advice."

Court of Protection, Legal 500 2021

"A very versatile, experienced and persuasive advocate."

Court of Protection:Health & Welfare, Chambers & Partners 2020

"She’s very pragmatic and has an excellent grasp of both Court of Protection and trusts-related matters."

Court of Protection:Property & Affairs, Chambers and Partners 2020

"She does a very good job for her clients and often undertakes really high-profile work."

Court of Protection: Property & Affairs, Chambers and Partners 2020

"Cool under pressure, she is tenacious in her cross-examination and will not give up on the points that matter – someone you definitely want in your corner."

Court of Protection, Legal 500 2020

"She's a tenacious advocate who certainly holds her ground in court and isn't afraid to make difficult points."

Court of Protection:

"A go-to counsel for international mental capacity matters, she has a really good practice and she really knows her stuff."

Court of Protection:

"She's very responsive, reliable and practical."

Court of Protection:

"She responds to a huge amount of emails and manages her workload really well. In terms of her actual work, I send her to court and can leave her to it, she’s completely independent. I have seen her cross examine and she is completely fearless."

Court of Protection:

"She has a sharp mind, her preparations are excellent and she is patient with lay clients."

Court of Protection:

"Noted for having a broad Court of Protection practice and being strong on mental capacity issues generally. As well as having a strong practice, she has published a number of texts relating to the Court of Protection."

She's very good, very approachable, very friendly and willing to provide advice outside of cases.

"Has a practice that encompasses both property and affairs and health and welfare matters. She acts for a range of clients, such as individuals, local authorities, the Official Solicitor and financial deputies. She is well known for her work in cases concerning statutory wills, gifts, trusts and disputed deputyships."

"She's very calm. We had an aggressive opponent, but Claire was very professional and a very good advocate."

To find out more, contact Matt Sale on +44 (0)20 7427 4910 or Andy Hunter on +44 (0)20 7427 4905 for a confidential discussion.

Our dedicated practice management team can help you identify the right barrister for your case.

  • Portuguese
  • Spanish

  • Court of Protection Practice (LexisNexis), co-editor: annual publication; leading text for practitioners and the judiciary.
  • The International Protection of Adults (Oxford University Press), co-editor: comparative analysis of private international law rules relating to mental capacity law and the Hague Convention on the International Protection of Adults.
  • Mental Capacity Law and Practice (LexisNexis), co-editor.

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