There appear to have been some incidents on the tube and on a London bus. BBC One, ITV, and Five have all scrapped their schedules and are broadcasting rolling news coverage. As some presenters have been noting, this incident probably wouldn’t be getting nearly this much coverage if it wasn’t for the previous attack, because it doesn’t currently appear to be nearly as serious an attack.

The incident doesn’t (at this stage) seem to have caused the number of casualties as in the attacks of two weeks ago, and the police are not currently treating this as a major incident. As you would expect, details are still emerging – it would appear currently that the working theory is that the evacuation has been caused by the explosion of three detonators, but no bombs. You can follow the latest developments on the Newsblog or on the BBC News site.