Incident took place at 21:15 on 29 April, 2016 during Critical Mass in London, UK.
Footage was recorded at the junction of Vauxhall Bridge Road and Millbank.
Metropolitan Police Armed Response Vehicle (BMW X5, registration BU12 AYY) hits multiple bicycles as it attempts to leave the procession.
This footage clearly shows the police vehicle clipping one bicycle, pushing another to the ground, then crushing a third bicycle, before accelerating off through a red traffic signal.
London Ambulance Service attended to one person with leg injuries, and another police crew attended — almost two hours later — to take statements.
This footage was shown to the officers who subsequently attended, and they have details required to obtain original footage.