Heidi SandyAdvocate

Heidi Sandy


I am an Advocate and Senior Associate in our Guernsey Litigation team, specialising in trust and commercial disputes. I also have a wide range of experience in advising clients in response to Tax Information Exchange Agreement (TIEA) requests, emanating from various jurisdictions including India, Australia, Canada, Switzerland and Russia.

I have acted for clients in various types of court proceedings, including obtaining injunctive relief and at appellate level.  However, I am also experienced in assisting clients resolve their disputes through mediation and negotiation.

I joined the firm in 2014 from Gordons LLP in Leeds. I have a keen interest in representing the profession, previously as chair of the Junior Lawyers Division. Now I am the current chair of the Women Lawyers Division of The Law Society.  

Professional qualifications

  • Advocate, Guernsey, 2019

  • Solicitor, England & Wales, 2006
  • LPC and GDL, Commendation, College of Law
  • BA Honours History, University of Leeds


  • Women Lawyers Division (WLD) of the Law Society of England & Wales

  • The Contentious Trusts Association  (ConTrA)
  • The Guernsey International Legal Association (GILA)

Work Highlights

Acting, for the first time in Guernsey, a judicial review by a taxpayer of a notice served pursuant to a Tax Information Exchange Request. 

Acting for corporate trustees in responding to Tax Information Exchange Agreements emanating from jurisdictions such as India, Russia, England and Switzerland. Also assisting fiduciaries in relation to regulatory action and enforcement action undertaken by the Guernsey Financial Services Commission.

Acting for a corporate trustee settling a complex multi jurisdiction dispute, which involves a multi jurisdiction mediation, concluding with an application to the Guernsey Royal Court to sanction the settlement.

Acting for a trustee in a contested Public Trustee v Cooper application regarding its decision to settle worldwide claims against the settlor.

Advising a trustee in connection with sham trust allegations made in foreign proceedings by the settlor's heirs.

Acted for professional executors in relation to inheritance law claims (including forced heirship and lifetime advancement issues), included two-day multi party mediation regarding various jurisdiction disputes between the parties.

Read more about Heidi Sandy

Chambers & Partners


Recent publication | 16 July 2019

Enforcing security over Guernsey real property