Drones are the latest in new technology to join the frontline of policing in Hertfordshire, Cambridgeshire and Bedfordshire following a successful trial of the intuitive devices.

The tri-force policing alliance carried out a nine-month trial and trained officers in the use of Unmanned Aerial Vehicle (UAVs), before introducing the operational use of UAVs in June.

The drones can be used to support operations and investigations, and to help ensure the safety of the public and they supported in the security operation of the EE Festival in Hatfield during August.

The devices, which have the ability to capture high-definition video and take high-resolution photographs, can assist in the search for missing people, document crime scenes and chemical incidents, and support fatal and serious collision investigations.

Across the three forces a total of 16 pilots have been trained from departments including Roads Policing and Armed Policing.

The tri-force is making operational use of four drones which cost in the region of £1,000 to 1,200 each, and can reach speeds of up to 36 miles per hour.

The drones can be flown up to a height of 400 metres and in winds of up to 25 miles per hour, but must remain within the view and control of a pilot at all times.