Officers from Dorset Police are being drafted in to fill the gaps in Olympics security left by the firm G4S.

9 forces are providing extra manpower, as many of the venues are now reaching the point where they have to be placed in security lockdown.

Home Secretary Theresa May's facing an urgent question in the Commons on the situation.

Meanwhile, thousands of athletes are arriving for the Games - on what's thought to be Heathrow's busiest day - EVER.