Various news agencies are reporting shots fired at Stockwell Underground station this morning at 1000. Sky and ITV are speculating that it was another suicide bomber, the BBC are being more cautious. Eyewitness accounts have said it was ‘plain-clothes armed officers’, which is interesting. Could they have had a tip-off? Or are there plain-clothes officers all over the Underground this morning? There are reports that he was shot while on the ground, which seems odd at first, but if he was about to detonate a bomb then I guess there’s just no choice.

1130: There are also reports of police surrounding an (actually the) East London mosque, with dogs (presumably sniffer dogs) being sent inside. Harry’s Place say there was a bomb alert.