Quercus International advises Altitude Accounting on its sale to Galloways Accounting

20 November 2025
Andrew Clegg

A team from Quercus International, led by Paul Warren and Michael Mortimor, are delighted to have advised Altitude Accounting Limited (“Altitude”) on their acquisition by Galloways Accounting Limited (“Galloways“), the rapidly growing accounting business backed by Cow Corner, the Brighton-based services and software-focused investment firm.

As part of this strategic partnership, the Altitude founders will join Galloways’ management team and co-invest in the continued growth of Galloways.

Altitude, based in Surrey, was founded by Amy Askew and Graham Seddon in 2019 and has experienced rapid growth, becoming the trusted adviser to rapidly growing clients, facilitated by high levels of technology and process adoption.

Through this partnership, Galloways will be able to expand geographically and add a proven and highly experienced team.

Graham Seddon, Co-Founder Altitude: “Our combination with Galloways represents an exciting milestone for Altitude, our clients, and employees. This partnership marks a significant step forward in our journey, reflecting our commitment to growth and innovation. With the support of Galloways, we will continue our strategic journey focused on delivering technology-enabled accounting processes, advice, and solutions to SMEs. This collaboration allows us to capitalise on the expertise and resources of both organisations, creating greater opportunities for our clients to succeed.”

Paul Warren, Quercus International, commented: “Through a combination of technology, well planned processes and a responsive high calibre team, Altitude has become the adviser of choice to its rapidly growing clients. As part of Galloways and with a highly complementary people and strategic fit, there are significant mutual opportunities to maximise growth together. We are pleased to have supported Altitude throughout this transformational transaction.

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