A DRIVER without a valid licence tested positive for cocaine after being stopped by police in Swindon.

Officers pulled over a black Mercedes on Groundwell Road at around midday on Saturday and spoke to the motorist.

He appeared to be vacant at times, switching between being compliant and then aggressive, so the officers wondered whether he was under the influence.

A roadside breath test proved negative for alcohol - but a drugs wipe then tested positive for cocaine.

The cops then discovered the driver did not have a valid driving licence because it had been revoked, and the vehicle was in an unroadworthy condition with an exposed front tyre.

They arrested the 39-year-old local man on suspicion of drug driving and driving otherwise than in accordance with a licence, then seized the car.

They took the suspect to Gablecross Police Station, interviewed him and later released him under investigation pending further enquiries.

Separately, the suspect has been charged with a shoplifting offence.

A police spokesman said: "Wiltshire Police is running its annual Christmas drink and drug driving campaign throughout December and our officers will be carrying out proactive patrols to keep our roads safe.

"The Roads Policing Unit will be supported by community policing teams across Wiltshire and Swindon to carry out increased patrols and operational activity, conduct high profile and intelligence-led traffic stops, and target those motorists who pose a huge risk to themselves and the lives of other road users.

"We would urge everyone to call us if they suspect someone of drink or drug driving.

"If someone you know is a repeat offender then call us on 101, giving as much information as possible, including details of their car and the journeys they are making.

"If someone is already behind the wheel then call 999."