New mobile 'Stingray' camera units will be in operation from Monday, reading number plates and checking them against DVLA road tax records.

Offenders' cars will be clamped, which will cost £200 to remove - after 14 days unlicenced and unclaimed cars will be crushed.

In targeting those who do not pay road tax, we are also targeting those who are committing other offences on the roads and elsewhere Inspector Ed Allington

The initiative is being supported by Thames Valley Police, who say there is often a link between road tax dodgers and other road crimes.

Inspector Ed Allington, of the Thames Valley Roads Policing Intelligence Unit, said: "We support the DVLA's campaign and will be assisting them to carry it out.

"I would urge motorists to check that their vehicles are properly licensed, and if not to licence them straight away.

"In targeting those who do not pay road tax, we are also targeting those who are committing other offences on the roads and elsewhere.

"In partnership with the DVLA this initiative will help us to tackle criminality and making the roads safer for law abiding road users in Thames Valley."