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Accounting Firm

Halligan & Co

Business valuation and forensic accounting specialists, including expert witness work for disputes

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About Halligan & Co

Halligan & Co is a practice that does business valuation and forensic accounting and nothing else. Brendan Halligan set it up in 2004 after a career as a partner at Arthur Andersen and at Ernst & Young. Because it does not sell audit, tax or consulting, it says it avoids the conflicts that hold back larger firms.

What Halligan & Co offers

  • Business valuation: shares, whole businesses, intellectual property, intangible assets and options.
  • Expert witness work: reports and evidence for legal proceedings.
  • Damages quantification: calculating losses in disputes.
  • Account of profits: working out gains made from a wrong.
  • Dispute valuations: figures prepared where parties disagree.

Key facts

  • Founded: 2004
  • Founder: Brendan Halligan
  • Values: quality, independence and respect, with senior staff giving close attention to each engagement

Profile written by TrustList from the business's own published information, Oct 2026.

Categories & features

What the business tells TrustList

Founded
2004 (22 years) evidence sent

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