[1] Mitchell won the England Classic and Swiss Open in 2009 which helped him qualify for the 2010 BDO World Championship as the 14th seed.

[1] Mitchell retained his Swiss Open title in 2010 and also won the Center Parcs Masters, and qualified for 2011 BDO World Championship as the 15th seed, however he was beaten in the first round 3–0 by Jan Dekker.

[1] Mitchell was once again beaten in the first round at Lakeside in 2012, losing to defending champion Martin Adams who won the match 3–0.

He won a host of tournaments including several that were televised on Eurosport namely Top of Ghent in Belgium and the Jersey Open.

After missing four match darts he lost 3–2 to Glen Durrant, who Mitchell beat in the Jersey Open final.

[1] As a result of winning the tournament Mitchell reached number one in the BDO Men's ranking.

After winning one of the first Challenge Tour events, Mitchell was invited to compete on the Players Championship circuit in 2020.

Mitchell still works full-time on the family farm in rural Dorset and as a freelance landscape gardener.