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Fiona Sinclair QC

Accountants, Auditors & Actuaries

Fiona is regularly instructed in claims for and against accountants and auditors (firms large and small) in disputes concerning audit and accounts preparation, tax advice and investment advice. She lectures on recent developments in accountants' negligence law.

Fiona’s past and current cases in this area include:

  • Acting for a pop music impresario against Big Four accountants in a claim relating to tax avoidance advice and the conduct of a Special Office investigation, and against solicitors in a related “lost litigation” claim. 
  • Acting for a high-net-worth individual and his family company in a claim against accountants/tax advisers for negligent corporate restructuring and tax mitigation advice given over many years.
  • Defending accountants and tax advisers in £15 million film finance litigation.
  • Defending his former accountants against a claim brought by a well known football chairman.
  • Defending accountants in a claim concerning advice given for the acquisition of a hotel business.
  • Advising accountants in a negligence claim being tried in Cyprus, including giving detailed direction and advice for the conduct of pre-trial proceedings and the trial in Cyprus by the Cypriot advocate.
  • Acting for a record producer in a claim against his accountants relating to tax avoidance advice and the conduct of a Special Office investigation. 
  • Acting in a claim by 4 high-net-worth individuals and their spouses against one of the Big Four accountants, arising out of advice on the tax-efficient disposal of shareholdings.
  • Acting for accountants on a claim concerning advice given in relation to CGT roll-over relief upon the acquisition of a holiday village.
  • Acting for accountants on a claim for negligent advice concerning CGT roll-over relief upon the acquisition of a hotel.
  • Easier Ltd v Deloitte Touche LLP [2004] EWHC 3263 (Ch): acting for auditors successfully defending a company’s challenge to their resignation under Companies Act 1985 s.394(6). 

Fiona is a member of both the Commercial Bar Association and the Chancery Bar Association.