DRAFT v0.1 / FILE REF CDD/2026/UK-MID-MKT / INDEPENDENT REFERENCE - NOT M&A ADVICE
§ GLOSSARY
G.

Due Diligence Glossary

Terms and acronyms used in UK commercial due diligence practice.

§ DIRECT ANSWER

This glossary covers the M&A and commercial due diligence terms used across the site: CDD, VCDD, QofE, NRR, GRR, TAM, SAM, SOM and the rest of the IC vocabulary.

§ TermsDefinitions

CDD
Commercial due diligence. The commercial review a buyer (or seller) commissions before signing.
VCDD
Vendor commercial due diligence. Sell-side commissioned, delivered with reliance to bidders.
QofE
Quality of earnings. The financial diligence report; reconciles to CDD chapter V.
ODD
Operations due diligence. Standalone workstream covering chapter IV territory in depth.
NRR
Net revenue retention. SaaS chapter II metric; expansion + churn netted against base.
GRR
Gross revenue retention. SaaS chapter II metric; churn-only view (no expansion).
TAM / SAM / SOM
Total / serviceable / obtainable addressable market. Chapter I triangulation framework.
IC
Investment Committee. The sponsor governance body that approves or rejects the deal.
SPA
Sale and purchase agreement. Where CDD red-flag chips end up as price adjustments or warranties.
IM
Information memorandum. The seller’s narrative pitch document; CDD tests its claims.
NDA
Non-disclosure agreement. Process gate before the data room opens.
NPS
Net promoter score. Customer-loyalty metric used as a chapter II triangulation point.
CAC / LTV
Customer acquisition cost / lifetime value. Chapter IV unit-economics pair.
Magic number
SaaS sales efficiency metric: net new ARR / sales & marketing spend.
Take-or-pay
Industrials contract obligating buyer to pay for minimum volume; chapter IV concentration risk.
CQC
Care Quality Commission. UK healthcare regulator; rating data feeds healthcare CDD.
VERIFIED 21 JUN 2026NEXT REVIEW 21 SEP 2026SRC: ICAEW CF; BVCA Industry Activity 2025-26

Marked-up by Oliver Wakefield-Smith. Draft v0.1, 21 June 2026.