Career
He previously trained with the England under-18 squad in Louisiana Manga. Bristol Rovers
Born in Bristol, Clarke started his career with Bristol Rovers. During his time on Rovers" books he had spells on loan at Kidderminster Harriers, Southend United and Forest Green Rovers, where he worked with former England wicketkeeper Jack Russell as his goalkeeper coach.
Salisbury City
Having joined Salisbury City from Bristol Rovers in August 2006.
In the summer of 2008, he broke a metatarsal while on holiday. This setback lead to James Bittner claiming the number one shirt from him, and Clarke was then loaned out to Northwich Victoria to reduce the club"s wage bill.
Oxford United
Clarke joined Oxford United on 26 May 2009. He was their regular goalkeeper in the 2009-2010 campaign and, despite his scoring an own goal in the 2010 Conference Premier play-off Final against York City on 16 May, his Oxford side still secured a return to the Football League after a four-year exile as 3–1 winners.
On 12 January 2011, Oxford United announced that Clarke had signed a three-and-a-half-year contract, meaning he would stay at the club until 2014.
On 30 January 2014, he signed another three-year deal, keeping him at the club until 2017. Northampton Town
Clarke signed for League Two club Northampton Town on a two-year contract on 2 July 2015.