The UK’s most accomplished M&A teams, united by a single purpose.
K3 Deal Advisory is a unified M&A advisory firm formed by bringing together three prominent UK corporate finance practices: KBS Corporate Finance, Knight Corporate Finance and Quantuma Corporate Finance. Our advisers have collectively completed hundreds of transactions and built the buyer, investor and lender relationships that deliver exceptional outcomes for entrepreneurs.
A firm built from three decades of deal experience.
K3 Deal Advisory sits within the wider K3 Capital Group, which also includes K3 Capital Advisory — the group’s capital markets and debt advisory sub-brand. Together they provide business owners, management teams and investors with a complete corporate finance capability: from sell-side M&A advisory through to complex debt structuring and equity raises.
The firm advises entrepreneurial and owner-managed businesses on transactions typically valued between £20m and £80m, with experience on deals significantly larger. Senior directors lead all client engagements — there is no account management layer between the client and the adviser responsible for delivering the outcome.
With over £3 billion in completed transaction value across hundreds of mandates, K3 Deal Advisory has one of the most substantial M&A track records of any boutique advisory firm in the UK.
Confidentiality first. Honest advice throughout.
Selling a business is one of the most significant decisions a shareholder will make. K3 operates on the principle that the best outcomes come from thorough preparation, disciplined process management and the kind of honest advice that keeps transactions on track when they become complex.
Our advisers have sat on both sides of deal tables, worked within acquirer organisations and led transactions personally — not managed them from a distance. That experience shapes how we prepare clients, how we approach buyers, and how we navigate the inevitable complications that arise between heads of terms and completion.
We do not take on mandates we cannot deliver. The firm’s reputation is built on the transactions we complete, and we bring the same rigour to a £25m disposal as to a £100m strategic exit.
Deep sector knowledge, not broad generalism.
K3 advisers have built sector-specific buyer networks and transaction experience across the markets where UK mid-market M&A activity is concentrated. That depth — rather than breadth — is what produces genuine competitive tension in a sale process.
A national footprint serving UK mid-market M&A.
K3 Deal Advisory operates across four offices, giving the firm the geographic reach to advise businesses throughout the UK while maintaining the senior-led engagement model that sets it apart from national accountancy-based advisory practices.
London
20 St Andrew Street, EC4A 3AG
Manchester
The Lexicon, 10–12 Mount St, M2 5NT
Birmingham
317–320 Cornwall Buildings, 45 Newhall Street, B3 3QR
Warrington
North West operations hub
Part of the Quantuma group.
K3 Deal Advisory operates within the broader Quantuma group, one of the UK’s leading independent advisory businesses. The group connection provides access to complementary advisory capabilities — including restructuring, forensic, and transaction services — that can be drawn on where the complexity of a situation demands it.
For capital markets and debt advisory, the group’s specialist sub-brand is K3 Capital Advisory, which leads on debt structuring, equity raises and balance-sheet recapitalisations for owner-managed and private equity-backed businesses.
Ready to discuss a transaction?
Talk to the team directly — no gatekeeping, no introductory calls with junior staff.