If I was a terrorist wanting to make a big impact in the UK I would target a football match on a Saturday afternoon

Could you imagine the carnage if they were able to bring down a main stand at a Man Utd or Liverpool game.
Thing is, i think they want to target the infrastructure more really. Football match being bombed would be bad for everyone there, but wouldn't effect the working business of the UK.
That may sound cold, but you know that's how they'd see it.