Will Young thought he had given himself "a hernia" on stage.

The 'Leave Right Now' hitmaker gave a polished performance at the English Heritage picnic concert at London's Kenwood House on Saturday (17.07.10) but worried he had overexerted himself when he ran a circuit of the concert area.

However, at the end of the track he admitted: "The back was further away than I thought! I think I've given myself a hernia. Or I may be sick."

The 31-year-old star was typically engaging with the audience, telling jokes and anecdotes between songs, despite admitting he had been told to "hurry up" in order to fit in all of their planned set.

The hit-laden set kicked off with 2005 hit single 'Switch It On' and spanned his whole career, including 'Friday's Child', 'Your Game' and 'Grace.'

After finishing with 'Leave Right Now', Will and his band exited the stage before returning for what the singer - who shot to fame after winning UK TV talent show 'Pop Idol' in 2002 - claimed was an "unexpected" encore of his first-ever single 'Evergreen'.

The English Heritage picnic concerts continue at Kenwood House and Audley End in Saffron Walden, Essex, throughout the summer.