The track is McFly's second number one

Harry Judd, Tom Fletcher, Dougie Poynter and Danny Jones play themselves in the programme, which was recorded on Wednesday and will air in January.

Producers are keeping details of the storyline under wraps but they have confirmed that none of the four will be in need of medical attention.

"Their fans need not worry - the boys are not hurt," said a BBC spokesman.

However, the spokesman declined to discuss what storyline the group - who have had two number ones with Obviously and 5 Colours in her Hair - would be involved in.