If you’ve been involved in a road traffic collision, or think you might have witnessed an offence on the roads in London, find out how to report it using our simple online tool. Just answer the quick questions below to make sure we give you the right advice and gather all of the relevant details.

Is it an emergency?

If a crime is happening now or someone is in immediate danger, call 999

Advice tool

Report a collision in which no one was injured, but details were not exchanged.

Thank you for getting in touch. If you were involved in a collision as a driver or rider you must personally report the incident to police as soon as reasonably possible and, in any case, within 24 hours of the collision. No one else may do this on your behalf. See the Road Traffic Act 1988, Section 170 for further details.

If the collision happened in London you can either report it at your local police station, to a police constable or by completing the following form online.


Click ‘Start’ below to provide as many details as you can about the incident. We’ll try to fill in the gaps wherever possible.


Average completion time: 20 minutes


Please have the following details available if possible:

  • The date and time of the collision
  • The registration and make of your vehicle
  • The registration and make of any other vehicles involved
  • Contact details of the other person, or people, involved in the collision
  • Contact details of any witnesses to the collision
Start