A little interesting tidbit at the bottom of this article
which mostly concerns the idiot rantings of an uncle of one of the London bombers:“We do not have hard evidence that the men were suicide bombers,” a Scotland Yard spokesman told The Sunday Telegraph. “It is possible that they did not intend to die.”
According to the paper, one police hypothesis is that the bombers were tricked by a ‘master’ who told them they would have time to escape - when in fact the devices were set to go off immediately.
“The bombers’ masters might have thought that they couldn’t risk the four men being caught and spilling everything to interrogators,” an unnamed security official told the Telegraph.
Lending weight to the theory is the fact that all four men had paid up their parking tickets before boarding a train at Luton for King’s Cross, and that they all bought return tickets to the capital.
Moreover, the paper said, the men were carrying their explosives inside rucksacks, as opposed to strapped to their bodies as is common practice among suicide bombers.
Update: Maybe, maybe not. One thing that bothers me about this theory is the bus terrorist, whose bomb exploded about an hour or so after the others. If the bombs were set off by the master, wouldn't they all have been set off at the same time?