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Claire van Overdijk


Carey Olsen

Hamilton, BM

Claire van Overdijk
Phillip Ullmann
Covenant Advisory
Hans Vestberg
Verizon Communications

Claire van Overdijk’s Biography

Claire van Overdijk is a highly regarded Barrister at Outer Temple Chambers where she specialises in private client law. She is recognised as “exceptional in cases involving complex overlapping issues of jurisdiction, finance, or particularly difficult family dynamics” and “efficient, precise, passionate and absolutely dedicated to getting the best for her clients” (Chambers & Partners 2020 & 2021). She was shortlisted as “Advocate of the Year” at the 2019/2020 STEP Private Client Awards and is recognised as an expert in cross border disputes.

Claire has extensive experience in mental capacity law, is recognised as a leader in the health & welfare and property & affairs jurisdiction of the Court of Protection and is described as “go-to counsel for international mental capacity matters” (Chambers and Partners 2020).

She has co-authored several publications relating to the Court of Protection’s jurisdiction including "The International Protection of Adults" (OUP), a text widely referred to by private client practitioners dealing with cross border mental capacity law. She is also co-editor of "Court of Protection Practice" and "Mental Capacity Law and Practice".

Claire is appointed to the Panel Counsel of the Equality and Human Rights Commission (A Panel) and to the Attorney General’s Civil Panel Counsel (B Panel). She also acts as Chair of the STEP Mental Capacity Global SIG Steering Committee, Secretary to the Court of Protection Bar Association, and as a Committee Member of COPPA (London). She is a member of the Panel of Presiding Judges for the 2021/2022 STEP Private Client Awards.

Previously, Claire was a Teaching Fellow at UCL where she taught Private International Law on the Master of Laws programme and Public International Law on the Bachelor of Laws course.

Claire is a mother of two and a keen sportswoman. She frequently runs for charity and enjoys new sporting challenges, usually in a rowing boat on the Thames.

Claire’s Newsfeed

Claire Van Overdijk Joins Carey Olsen As Counsel

Barrister Claire van Overdijk expressed her delight at joining Carey Olsen at such an exciting time in the company’s development.

Claire van Overdijk appointed Chair of the STEP Mental Capacity Global Special Interest Group

Claire van Overdijk has been appointed as Chair of the STEP Mental Capacity Global SIG Steering Committee and also as a Presiding Judge for the 2021/22 STEP Private Client Awards.

Claire’s Background

Carey Olsen
Sep 2021 - Present
Hamilton, BM
Carey Olsen is a renowned offshore law practice with 9 international offices that advise corporations, financial institutions and private customers on Bermuda, British Virgin Islands, Cayman Islands, Guernsey and Jersey.
Outer Temple Chambers
Mar 2017 - Present
London, UK
Described in Legal 500 as "cutting edge and innovative", Outer Temple Chambers head office is in London, with further offices in Dubai and Abu Dhabi.
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Claire’s Gallery

Advisory Roles

STEP Private Client Awards 2021
Presiding Judge
Claire van Overdijk has been appointed as a Presiding Judge for the 2021/22 STEP Private Client Awards. She joins a panel of 21 judges, each recognised as experts and leaders in their own fields and together span the international legal, accountancy, financial advisory and fiduciary sectors.


GDPR accredited Barrister
Apr 2020
London, UK
The certification confirms that Claire operates with compliance to the GDPR (UK Data Protection Act 2018)


The International Protection of Adults
May 2015
Oxford, UK
Claire co-authored this publication which is useful to practitioners acting in the complex area of cross border mental capacity law.
Court of Protection Practice 2020
Mar 2020
Bristol, UK
Claire co-authored this publication, providing crucial guidance to those judges hearing cases in the Court of Protection in relation to procedures to be followed.
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The Society of Trust and Estate Practitioners (STEP)
Full member and Chair of the Mental Capacity Global SIG Steering Committee
London, UK
STEP is the global professional association for practitioners who specialise in family inheritance and succession planning.
The Chancery Bar Association
London, UK
The Chancery Bar offers great depth of legal expertise across the whole spectrum of finance, business and property law.
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Claire’s Education

Leiden University
LL.M. Public International Law
2000 - 2001
University College London
1997 - 2000