Sam Williams

Sam Williams 

Partner | Jersey

Private Client and Trusts

  • Sam Williams is an excellent lawyer who is very good on his feet. He has grown into a highly skilled advocate.
    Legal 500 2022
  • Rising Star.
    Legal 500
  • Distinguished career. Accomplished in large family cases. Formidable.
    Citywealth Leaders List
  • Sam Williams is a standout advocate, really clever and robust.
  • Sam Williams [...] is one to watch for the future. He was heavily involved in the long-running Crociani litigation and is extremely able.
    Legal 500
  • Senior associate Sam Williams is a real star and a very promising advocate. He is also a very sound lawyer.
    Legal 500
  • Sam Williams is phenomenally bright and a very attractive advocate: the Court loves him.
    Legal 500 (UK) 2023
  • Sam Williams is excellent on his feet and extremely clever.
    Legal 500 (UK) 2024
  • Sam Williams is very clever and diligent.
    Chambers UK 2023
  • An effective litigator with great judgement.


Sam is a Partner and Jersey advocate in the Private Client and Trusts team. He specialises in complex and high-value trusts and estates litigation and semi-contentious applications. Sam also has expertise in the enforcement of foreign judgments and arbitral awards, and asset freezing and preservation orders.

"My priority is to deliver practical results for clients. My advice always has a strategic focus so that clients can make informed decisions."


  • Appearing at trial in Representation of B and C [2022] JRC 086, an application to remove a trust protector based on loss of trust and confidence
  • Obtaining Beddoe relief for a trustee in relation to a challenge to a foreign tax liability
  • Appearing for Kea Investments Limited in Jersey enforcement proceedings against an English High Court judgment debtor, which involved issues of insolvency and winding up of trusts
  • Representation of Roberts and Toynton & Anr [2021] JRC 008: securing the appointment of receivers by the Royal Court of Jersey to pursue worldwide enforcement action in respect of a promissory note with a face value of over €50 million
  • Crociani v Crociani [2019] JRC 028B: obtaining and upholding a worldwide freezing order in the sum of £21 million in respect of an equitable contribution claim arising out of breach of trust proceedings
  • Re Estate of Constantin Mattas [2022] JRC 237: securing a ground-breaking order for substituted service on a foreign state in proceedings relating to a will trust


Sam holds a first class honours degree in modern history from the University of Oxford. He joined Collas Crill in 2016, prior to which he worked at another offshore law firm in Jersey and at a well-known international firm in London where he trained and qualified as an English solicitor in 2010 (currently non-practising). Sam was called to the Jersey bar in 2015.

Awards/ Directories

Sam is included in CityWealth's Top 100 Trusts Litigators. In Legal 500 he is ranked as a 'Next Generation Partner' and in Chambers UK as 'Up and Coming' in the 2024 guide.


Sam has authored a LexisPSL practice note on enforcing arbitral awards in Jersey and is author of 'The nature of a beneficiary’s interest under a Jersey law trust: Kea Investments v Watsonin its historical context' which featured in Trusts & Trustees, Volume 28, Issue 3, in March 2022


  • Contentious Trusts Association
  • Board of Examiners for Jersey Bar examinations
  • Law Society of Jersey
  • Law Society of England and Wales

Business Assistant
Antony Mwanzia  
My services
Contentious risk and regulatory

In regulatory disputes there are often fine lines between the usual wrangling with the regulator and something more serious – by matching our mix of experienced contentious and non-contentious lawyers to the particular problem at hand, we achieve better and more efficient outcomes. As regulatory experts, we frequently act on contentious matters and can leverage our experience to help clients achieve the highest regulatory standards and avoid common pitfalls.

Corporate disputes

Our dispute resolution specialists collaborate seamlessly with our corporate advisory and banking teams across jurisdictions to advise multinational corporations, trust companies, banks, funds, insurers, governments and directors. We provide a global perspective, working closely with our clients to ensure that they are best placed to respond to customer issues, fraud risks, rapidly changing market conditions and regulatory demands.

Fraud, asset tracing, freezing, recovery and enforcement

We're used to working as part of a multi-jurisdictional team, capable of reacting and responding quickly to urgent requests for assistance with locating and freezing assets. As sophisticated defendants become more adept at dissipating assets, we've been involved in cases that created new law in relation to a party's ability to trace assets and recover their losses. With their ability to deal with complex issues the team deliver clear, commercial advice on the availability and likely success of recovery methods.

Trust disputes

We represent beneficiaries, high-net-worth individuals, trustees, protectors and other power holders in a range of contentious and semi-contentious situations. Our lawyers have been at the forefront of the most complex, high-value private wealth litigation offshore. 

We often deal with novel points of law, creating new and innovative solutions to meet the needs of our clients.

Given the international nature of private wealth, with clients and their assets spread across the world, we work as a joined-up global team so that our clients can benefit from the knowledge and experience wherever they may need it.

Read more
14 Feb 2023

Offshore Jersey trusts

This article first appeared on LexisPSL Private Client on 01.02.2023 Overview Private Client analysis: A trustee of a Jersey law trust sought a blessing of its decisions to challenge a joint tax liability imposed on it and a French-resident beneficiary b...

20 Oct 2022

Collas Crill: Chambers 2022 UK

Collas Crill has maintained its strong position in the Chambers & Partners United Kingdom 2022 directory, upholding its rankings across all practice areas, with the addition of a number of individual awards. The directory demonstrates the firm's mar...

29 Sep 2022

Collas Crill UK Legal 500 2023

Collas Crill has maintained its strong position in the Legal 500 United Kingdom directory this year, upholding its rankings across all practice areas. Described as one of the 'offshore Magic Circle', the firm is Tier 1 or 2 in all but two practice areas...

20 Jul 2022

Enforcing arbitral awards in Jersey

Sam Williams has produced a practice note in partnership with Lexis PSL on the enforcement of arbitral awards in Jersey. The note provides in-depth, up-to-date legal information on domestic, non-domestic, foreign and convention awards covering: cond...

23 Mar 2022

Jersey trust law

An article by Group Partner Sam Williams has been published in Trust & Trustees magazine on the topic of the nature of a beneficiary’s interest under a Jersey law trust, looking at Kea Investments v Watson in its historical context. In Kea Investmen...

15 Jul 2021

Matter of M Settlement

Case analysis by Group Partner Sam Williams, Of Counsel Fritha Ford and Associate Kirsten Bailey, published on LexisPSL on 8 July 2021 Private Client analysis: The trustee of the M Settlement, a Jersey law trust, applied to the court pursuant to Article ...

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Event 30 Mar 2022

Trusts in Litigation

Event 14 Mar 2022

Trust & Litigation Forum

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