He Who Dares: Downing Street Siege

With the terrorists barricaded deep within the building, and holding the Prime Minister's daughter hostage, the elite team of SAS troops are left with only one way in and one way out. With the odds of coming back out of the building alive stacked against them, their only option is to take the fifteen storey building one floor at a time in the hope of reaching the hostages before it's too late. (StudioCanal UK)