How to buy a business in the UK: valuation, financing and due diligence

Buying an existing company can accelerate growth, but success hinges on planning and disciplined execution.

This guide covers the essentials: building an acquisition business plan that aligns with wider strategy, forming a robust valuation, transaction structuring considerations (including how earn‑outs can protect buyers), evaluating funding options, and running risk-based financial, tax and legal due diligence (DD) with red‑flag DD for smaller, lower‑risk deals.

We also outline regulatory and SPA considerations, and why ESG findings can influence pricing or even derail a transaction. By the end, you’ll know what to prepare before, during and after the process to improve deal certainty and post‑completion outcomes.