My Super Green Beret Powers© allow me to assess the chuckleheads in England who canabalized their gas bbq grills and stopped at the local hardware store for a gas can as not very serious terrorists. Neither strategically nor tactically, there are much better targets available. Noone with even a small amount of knowledge of explosives would use gas canisters and gas cans as bombs in this manner.
I have to agree with Larry Johnson. England seems to have some kind of problem with silly people who are more likely to injure themselves than others. Perhaps its the influence of Benny Hill.