Grant Thornton UK added 300 employees to its public sector assurance practise, mainly staff from the Audit Commission, which is being closed by the government in 2013.
The staff will join the firm’s existing operations around the country, from Scotland to the south west.
Grant Thornton UK chief executive Scott Barnes said:
"This growth resulting from a major tender exercise conducted earlier this year, confirms the quality of work delivered by Grant Thornton and we are delighted that this quality and expertise has been recognised."
Sarah Howard, Grant Thornton’s national head of public sector assurance added: "The firm will benefit from the tremendous level of sector expertise and genuine public sector commitment that they [new staff] bring. I am confident that Grant Thornton will offer an exciting environment in which they will thrive, and a great opportunity to work together to deliver distinctive, high quality local audit that really adds value to our NHS and local authority clients."
The UK government announced it is to abolish the Audit Commission in 2011 in order to save £50m ($80.2m) a year in costs.