Peter Kay and Susan Boyle song to be released

Peter Kay and Susan Boyle's Comic Relief spoof could be set for worldwide success.

The duo performed love song 'I Know Him So Well' during Friday night's charity telethon, and now the track has shot straight to the top of the iTunes chart.

Red Nose Day bosses are now planning to release the single worldwide to raise more money for the charity.

Peter Kay tickets are currently on sale for the comedian's 'Tour That Doesn't Tour' Tour dates, taking place throughout 2011.