§ COMPARE
VC.
Big-4 vs Boutique Commercial Due Diligence
Decision matrix for instructing Big-4 deal advisory or a UK mid-market CDD boutique.
§ DIRECT ANSWER
Boutique CDD wins on sector depth, partner accessibility and fee (£15-25k vs £75-150k). Big-4 deal advisory wins on brand-risk cover, syndicated-lender-acceptable reliance and global cross-border coverage. The IC’s actual challenge points decide.
§ 1.1Matrix
| Dimension | Boutique | Big-4 |
|---|---|---|
| Fee | £15-50k | £75-250k |
| Timeline | 3-5 wk | 5-8 wk |
| Sector depth | High (specialist) | Mid (generalist) |
| Partner accessibility | Direct | Limited |
| Lender reliance | Boutique terms | Syndication-ready |
| Brand cover | Low | High |
§ 1.2When IC prefers boutique
Bolt-on programmes, repeat sponsors with internal sector view, mandates where partner pen-down is the sponsor’s primary signal of quality.
§ 1.3When IC prefers Big-4
Cross-border deals, syndicated debt structures, first-time fund partnerships where institutional cover matters more than depth.
VERIFIED 21 JUN 2026NEXT REVIEW 21 SEP 2026SRC: ICAEW CF; BVCA Industry Activity 2025-26