The car bombs that were supposed to blow up nightclubs in London fizzled also.
Flashback:
Police find two car bombs in central London
http://www.reuters.com/article/idUSL2919779720070629
Police found two car bombs packed with gasoline, propane and nails in London’s teeming theater district on Friday, averting attacks that echoed an earlier al Qaeda plot and could have killed or maimed scores of people.
Officers defused the first bomb, found in a green Mercedes parked outside one of London’s biggest nightclubs, the cavernous Tiger Tiger, at around 1 a.m. (8 p.m. EDT), when hundreds were packed inside for “Sugar ‘n Spice Ladies Night”.
Flashback: 2007 Glasgow International Airport attack
http://en.wikipedia.org/wiki/2007_Glasgow_International_Airport_attack