They're now saying that two of the people being questioned are doctors who've been working in British hospitals.

Holy God tonight.

The man or woman I'd like to hold my hand out to is the police officer who took the mobile phone out of one of the cars - it would have been the detonator. (Not that anyone should do the same again; bombers learn, and the next trigger could be opening a door.) Bless his or her courage and selflessness.