I have no idea if these are British Special Forces troops. I would guess they are Royal Marines. Anyway, it is sort of funny. Evan they must have thought so, by the laughs.
http://www.youtube.com/watch?v=mi1M_H-FNpg&mode=related&search=special forces

http://www.youtube.com/watch?v=mi1M_H-FNpg&mode=related&search=special forces