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

maduediligencechecklist.com

The UK M&A Due Diligence Checklist

Decision aid

BDO vs Grant Thornton UK


BDO and Grant Thornton are both UK Tier-2 firms with deal advisory teams. Both publish service pages but no fee data.

The honest take

Ask each firm for sector credentials it can name and a quote broken down by hours and grade for the same scope. Partner choice within each firm tends to outweigh the firm-name signal.


Side by side

BDO UK

Tier-2

UK Tier-2 firm with a deal advisory practice covering financial and tax due diligence alongside lead M&A advisory.

Sectors: Technology, Financial services, Real estate, Energy

Pricing: Quote-only. Fees scale with EV, jurisdiction count and complexity. Engagement letter issued per workstream.

Adviser profile ->

Grant Thornton UK

Tier-2

UK Tier-2 firm whose transaction advisory services team carries out buy-side and sell-side financial and tax due diligence for private equity and corporate clients.

Sectors: Technology, Financial services, Consumer, Healthcare

Pricing: Quote-only. The firm publishes service descriptions, not fees or rate cards.

Adviser profile ->

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.