The "Jed We Can" campaign championing 'X Factor' contestants John and Edward Grimes has been cranked up a notch.

ITN reports that self-styled "Jed Mania" campaigners waved banners outside Simon Cowell's offices and played the double act's rendition of the Britney Spears hit 'Oops... I did it again' from loudspeakers as they chanted about how much they love the pair.

They also projected the twins' faces onto the building where Cowell's SyCo company is based.

The stunt comes as the house where the 'X Factor' finalists are staying is under siege from fans who cannot get enough of the pair.

The "Jed We Can" campaign already boasts celebrities such as Lily Allen in its ranks but are set to add a potential British leader as well. ITN quotes sources as saying that UK politician David Cameron has already ordered a "Jed We Can" t-shirt and intends to wear it soon.