Supported by investment from Goldman Sachs Alternatives, this partnership represents AAB’s largest deal to date and its 18th since 2021. The expanded group will employ over 1,800 people across 23 locations in the UK and Ireland, significantly bolstering its presence in the South East of England through Kreston Reeves’ established offices in London, Kent, and Sussex.

This strategic move aligns with AAB’s ambition to become the premier professional services firm for the mid-market. By integrating Kreston Reeves’ 200-year heritage and its expertise in audit, tax, and advisory services, the group enhances its specialist capabilities while maintaining a client-centric culture.

Emma Lancaster, chief executive at AAB, said: “This is a major milestone for AAB and a clear demonstration of our ambition to become the leading professional services firm serving the mid-market.

“Growing the group beyond £200 million revenue is not about growth for growth’s sake - it’s about building a resilient, sustainable business that delivers long-term value for our clients, our people and our communities.

“This is our third deal since our investment deal with Goldman Sachs Alternatives was completed two months ago, and we are hugely excited about the future opportunities ahead as we continue to scale by combining businesses who share our dedication to putting clients at the heart of everything we do.”

Richard Spofforth, managing partner at Kreston Reeves, added: “This is a significant milestone for our business, people and clients. Building on the strengths we have at Kreston Reeves, it will create new opportunities for our talented colleagues. For our clients, it will provide them with access to broader specialist expertise together with greater geographic reach.

“Most importantly, AAB shares the same values as Kreston Reeves, giving us a combined platform for sustainable long-term growth.”

Jose Barreto, partner, and Mihir Lal, managing director, private equity at Goldman Sachs Alternatives, said: “We are very excited about the strategic combination of AAB and Kreston Reeves. This partnership accelerates our vision for a national presence across the UK and Ireland, delivering essential scale in the South-East of England.

“The deep cultural alignment between AAB and Kreston Reeves will strengthen the collective offering for both customers and employees.”

The partnership is subject to regulatory approval and is expected to close in Spring 2026.

AAB was advised by Goldman Sachs International (financial adviser), Addleshaw Goddard, and Linklaters (legal advisers).