UK-based business advisory and accountancy company Menzies has merged with Haines Watts Wales (HWW).

The merger is expected to bolster Menzies’ operations in Wales and expand its Cardiff office.

HWW supports a diverse client base, including corporates, SMEs, not-for-profits, and entrepreneurs.

The company’s integration into Menzies adds it to the HLB network, making it the eighth-largest network of independent advisory and accounting companies worldwide.

The merger brings 20 employees, including two new partners, to Menzies. The Cardiff office now employs over 40 people with a combined fee income of £4m ($5.4m).

Menzies said this expansion enhances its service capabilities. It will now offer audit, accounts, and tax services alongside business recovery and advisory expertise.

Both parties share a commitment to combining large-firm expertise with local, personalised service.

Menzies highlighted that the leadership consists of partners with experience in building local businesses.

The merger supports its goal to achieve £85m in revenue this financial year. This figure doubles Menzies’ revenue from five years ago.

Menzies partner John Cullen said: “The merger with HWW represents a strategic milestone for Menzies as we strengthen our full-service capabilities in Wales.

“Wales has always been a very important market for Menzies, and this merger underlines our long-term commitment to growth in South Wales.

“It will create new job opportunities and enable us to offer an even higher level of service as we reinforce our commitment to providing the best offering to clients throughout the principality.”