§ TYPE 3
T3.
Top-Up Commercial Due Diligence
Incremental scope commissioned off a vendor VCDD reliance package.
§ DIRECT ANSWER
Top-up CDD is commissioned by a buyer that has VCDD reliance from the seller’s adviser. The buyer’s scope tops up where reliance is too narrow: usually fresh customer interviews, an independent risk register and an IC-ready synthesis. UK fee anchor £10-25k boutique / £30-60k Big-4 over 2-4 weeks.
§ 1.1When to use
Sell-side has commissioned a VCDD; the buyer reads it, then commissions a top-up to cover the chapters or counterparties the reliance does not stretch to.
§ 1.2Typical incremental scope
- Buyer-side customer interviews (independent of seller list)
- Independent risk register
- Synthesis chapter and IC summary
- Bridge to financial DD workbook
§ 1.3Fee anchor
Boutique £10-25k / Big-4 £30-60k.
VERIFIED 21 JUN 2026NEXT REVIEW 21 SEP 2026SRC: ICAEW CF; BVCA Industry Activity 2025-26