Oscar Mustard

Biography

Oscar is an associate in the disputed wills and trusts team.

Oscar specialises in complex contentious trust, succession and estate matters (often with an international flavour). He advises trustees, international trust companies and high-net-worth individuals on all aspects of contentious wills, trusts and estates and has experience litigating in England, Jersey, Guernsey, Hong Kong and the Caribbean jurisdictions.
 
Oscar frequently advises on applications to court in respect of trust interpretation and administration, blessings, contentious partitions of trusts, applications for disclosure of information from trustees, executor/beneficiary disputes, breach of trust claims and professional negligence. He has also acted (successfully) in some of the leading offshore cases concerning applications to set aside transactions on the grounds of mistake or Hastings-Bass, including, exceptionally, in connection with an offshore foundation. 
 
Oscar joined Ashfords in 2024, having previously practised at an international firm in London, where he specialised in high-value, international trust and private client disputes and was recognised as a "key lawyer" in the Legal 500. He has extensive experience of litigating in offshore courts and regularly speaks at international conferences. He also writes for the Ashfords Wealth Brief on topical issues in the private wealth sector.