Affinia, the UK-based integrated accounting and advisory group backed by RedBird Capital Partners, has added Wilson Partners, a Fordhouse-backed financial advisory and accounting firm.

Wilson Partners advises SMEs, private individuals and private equity investors across the UK.

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According to Affinia, the merger “further strengthens” its position in the UK accounting sector, by adding sector expertise and specialist advisory capabilities especially in the international ultra-high-net-worth category.

Affinia Group CEO Darren Redmayne said: “From the very beginning, our goal has been to build a new kind of accounting services firm that leads with purpose, invests in its people and embraces technology responsibly.

“Wilson Partners shares that philosophy, joining with an outstanding reputation for exceptional client service, entrepreneurial thinking and a people-first culture.

“Together, we are creating a firm with the scale to invest, the capability to support increasingly complex clients and, most importantly, a culture that remains genuinely entrepreneurial, collaborative and dedicated to championing the businesses that are the beating heart of the UK economy.”

The group will also continue to work with RedBird X, RedBird’s AI platform.

Commenting on the deal, Wilson Partners founder and managing director Allan Wilson said: “For nearly twenty years, we’ve built Wilson Partners around a simple belief: business should make life count for our clients, our people and the communities we serve.

“From our first conversations with Affinia, it was clear we shared the same values and long-term ambition. Joining Affinia creates exciting opportunities for our people, broadens the expertise and international opportunities available to our clients, and gives us an even stronger platform for future growth while staying true to what has always made Wilson Partners different.”

The enlarged Affinia group now operates from 33 offices, employs around 1,600 people, and serves more than 25,000 clients.