Amazon’s camera doorbell company Ring has linked up with police forces across the country to hand out thousands of free doorbells, leading to allegations that it is creating a “surveillance state” on private property.

The tech giant has given the recording devices to at least four forces to pass to residents. At least five other forces have promoted the all-seeing doorbells with money-off vouchers or discount codes. Yet others are in talks with Ring.

The company and the police claim the video doorbells, which start at £89, deter intruders and capture evidence that helps crime investigations. The internet-enabled devices are triggered by movement and start recording as someone approaches the front door. The householder is notified via mobile.

The initiatives have been welcomed by Neighbourhood