At Canada's own Winds of Change, Dan Darling lays out the state of play in England and the world and offeres some concrete thoughts as to what might be done to reduce the threat. You can read him here and check the comments as well.
If you have time there is an excellent article, complete with the Cabinet Papers, on the origins of the Islamic threat in England at the Times.
A joint Home Office and Foreign Office dossier — Young Muslims and Extremism — prepared for the prime minister last year, said Britain might now be harbouring thousands of Al-Qaeda sympathisers.islamic terror
Lord Stevens, the former Metropolitan police chief, revealed separately last night that up to 3,000 British-born or British-based people had passed through Osama Bin Laden’s training camps.