On 23 July 2010, Kelly starred as Martin in the sitcom My Family and in the Heartbeat episode "Deadlier Than the Male". He also starred in When We Are Married at London's Garrick Theatre and in Mike Leigh's movie for the 2012 Olympics, A Running Jump. He opened at the National Theatre on 21 September 2011, in Mike Leigh's play, Grief, starring with Lesley Manville. His final film role was a cameo as a theatre actor in Mike Leigh's 2014 film Mr. Turner.