The prank played by X Factor stars JLS on fellow singer Olly Murs at Sporthouse in Dagenham will be aired tonight (Friday October 19) in a television marathon to raise funds for cancer research.

The gag was part of Stand Up To Cancer, a joint campaign by cancer Research UK and Channel 4 with the aim to “bring forward the day when all cancers are cured.” It involved Aston Merrygold of JLS being fired from a canon while Olly looked on in shock horror.

A host of stars including George Clooney, Will Smith and David Beckham will feature in the show and took part in a variety of events to help raise awareness

Davina McCall, Alan Carr and Dr Christian Jessen play hosts for the fundraising extravaganza which begins at 7.30pm on Channel 4.

Vist standuptocancer.org.uk/tv for more information.