Chartered accountant Clement Keys has won the contract to provide internal audit services to the Peak District National Park.
The firm was given the contract following a competitive pitch and is the first national park account for the department.
Clement Keys director of internal audit Lee Glover, said the deal would help the National Park meet guidelines.
He said: “All public sector organisations are under pressure to maintain the quality of service levels whilst dealing with reduced funding.
“Clement Keys internal audit is a strategic service that facilitates the re-engineering of the organisation’s approach to the internal audit process.
“We are delighted to add the Peak District National Park to our portfolio of clients.
“It demonstrates our ability to apply the benefits of our robust service to any public sector, charity or not for profit organisation.”
The Peak District National Park was Britain’s first national park, established in 1951. It covers 555 square miles of Derbyshire, Staffordshire, Cheshire, Greater Manchester and South and West Yorkshire.
It has an estimated 22 million visitors per year making it the second most-visited national park in the world after the Mount Fuji National Park in Japan.