http://www.sassurvival.co.uk/
Didn't realise this. Ex-paras and SAS members are running courses in the UK. Similar to those you get when in the UK special forces. Course you don't get to use real guns and real ammunition.
Check out one of the leaders on youtube, Bob Spour.
http://www.youtube.com/watch?v=vOTwg_YXYy0