Cartridge World Racing has withdrawn from the final three rounds of the British Touring Car Championship after splitting from Clyde Valley Racing - the team that ran its pair of biofuel SEAT Leons.

AUTOSPORT understands that following the split, drivers Adam Jones and Gordon Shedden had attempted to recruit an alternative team to run the cars - again under the Cartridge World banner -- at Silverstone this weekend.

These efforts, however, were unsuccessful, leading to the withdrawal of the squad.

A statement from Cartridge World read: "Cartridge World is disappointed to confirm that Cartridge World Carbon Zero Racing is unable to line up on the grid for the final three weekends of the 2009 HiQ MSA British Touring Car Championship, following the withdrawal of Team CVR (Clyde Valley Racing), the original outfit behind the carbon-zero racing team.

"Cartridge World and both team drivers, Adam Jones and Gordon Shedden, have investigated various options to enable them to compete in the last three weekends' races.

"However, they have concluded that this will not be possible, and therefore Cartridge World Carbon Zero Racing will no longer appear in the championship.

"Cartridge World has expressed its disappointment that Team CVR has had to withdraw. As well as ensuring it always met its contractual obligations with Team CVR, Cartridge World offered the team access to specialists on its management team, aiming to create as beneficial a relationship as possible for both parties."