Blacksheep,
To add to the Al Qaeda thing. The term Al Qaeda was first used (to describe a structured terrorist organisation) by FBI Investigators in connection with the African Embassy bombings of 1998. Bin Laden only used this name after September 11, 2001. In 1998 (while the US Intelligence guys rolled out 'Al Qaeda') he called his group the rather less media friendly 'World Islamic Front for Jihad against the Jews and Crusaders'.
Who is the threat to the UK?
Hamas? - No, Palestinian cause. Israel helped to create it.
Hezbollah - No, Lebanese resistance movement sparked by Israeli occupation of Lebanon.
Baathists - No, Secular political party. Founded by a Christian. Fighting the occupiers, annoyed about losing power.
The Taliban - Aka Mujahadeen. Fighting the occupiers (who is it this year?)
Iran - Minding their own business (note that this includes what is happening to their neighbours). Haven't forgiven the yanks for Op AJAX.
All of these players have a mission but it's not the Islamisation of the world.
Al Qaeda - if any truly organised group exists - may have dreams of this but its 18 000 members may have a bit of a task ahead of them if they want to win power in the British elections.