Anchored to UK statute. Last verified 25 October 2026. View source-of-record.

maduediligencechecklist.com

The UK M&A Due Diligence Checklist

Big Four

Deloitte UK - due diligence services


Big Four house with full Strategy and Transactions team. Anchors on £50m+ EV deals, regulated targets, cross-border and carve-out complexity.

Direct answer

Deloitte UK is a Big Four transaction-services firm. UK fees are quote-only: the firm publishes service descriptions, not rate cards. Scope and fee are set out per workstream in the engagement letter.


Workstreams covered

  • FDD
  • Tax DD
  • Commercial DD
  • Operational
  • M&A advisory

Sector focus

  • Financial services
  • TMT
  • Energy
  • Healthcare
  • Infrastructure

Pricing approach

Quote-only. No published rate card. Ask for hours by grade and the rate per grade so the quote can be compared with a Tier-2 proposal.

Source: www.deloitte.com - verified 2026-10-25.

When to instruct

Big Four scope can be more than a small domestic deal needs unless the target is regulated, multi-jurisdiction or carries unusual tax complexity. Ask for a capped fee and a named partner whose hours appear on the engagement letter.


Reviewed by Oliver Wakefield-Smith, Founder, Digital SignetLast verified 21 June 2026

This page is anchored to UK primary legislation and named regulator guidance only. Not legal advice. Confirm position with your appointed adviser before signing.