Dorset Police say they can't yet say how many extra officers will be deployed at the Olympics, to help plug a security gap left by G4S.

The county's one of nine forces sending hundreds of additional officers - after the private firm failed to find enough guards, and only a fraction of those due to report for duty today actually did.

The Home Secretary's updated MPs on the situation in the Commons this afternoon.

Theresa May says G4S repeatedly assured the government that they would overshoot their recruitment targets - and only admitted they'd actually fallen short last week: