Men from the UK's Kashmiri community have joined groups such as Lashkar-e-Toiba, the prime suspects in the Mumbai attacks, which have been fighting against Indian forces in Kashmir. Others from a Pakistani background are in the ranks of the Taliban and other groups taking part in action against British and Nato forces in Afghanistan.

A former commander of the British force in Helmand, Brigadier Ed Butler, has revealed that his troops had come across British Muslims in southern Afghanistan. "There are British passport holders who live in the UK who are being found in places such as Kandahar," he said. "There is a link between Kandahar and urban conurbations in the UK. This is something ...