Police have carried out a controlled explosion on a suspicious package near Horse Guards Parade
Officers carried out the blast close to Downing Street.
It comes just one day after three people were killed when Khalid Masood mowed down pedestrians on Westminster Bridge before crashing a car near Parliament and stabbing a policeman.
Extra armed police have been deployed across the capital in the wake of the attack.
The area around Horse Guards Parade has been busy today as people left tributes to the victims at the Police Memorial.
More to follow…