Old Mill, a leading firm of accountants, financial advisers and tax specialists supporting businesses and individuals across the South West, is celebrating its 20th anniversary, marking two decades of consistent growth across the region.
Founded in 2006, Old Mill has grown from a regional accountancy practice into a 300+ strong multidisciplinary professional services firm, with offices in Exeter, Chippenham, Wells, Yeovil and Ilminster. 
The firm advises businesses, entrepreneurs, landed estates and private individuals across accountancy, tax, financial planning, corporate finance and business advisory.
While its roots remain firmly in the rural sector, Old Mill has expanded rapidly onto other industries, including Food & Drink and Property & Construction, in response to the changing needs of its clients.
The anniversary comes less than a year after Old Mill and its outsourced finance division, Brook Financial, joined Kinbrook Group in November 2025.
Old Mill now forms part of Kinbrook Group’s growing UK network, which spans 24 offices and brings together established regional professional services firms.
Mark Neath, CEO of Old Mill, said: “Old Mill looks very different from the business we started 20 years ago, but the driving principle behind it remained the same building long-term relationships and understanding the people behind each business has always been our focus.
“As we enter our third decade, we’re excited about continuing to support our clients, our people and the communities we serve.”
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