Police have issued a warning that they will crack down on drink and drug drivers on the run up to Christmas.

Throughout December, Hampshire Constabulary and Thames Valley Police will increase patrols as part of Operation Limit.

The campaign aims to catch those driving while impaired, including the morning after a night of drinking.

Last December, 810 people were arrested for drink or drug driving across both forces.

Chief inspector Emma Hart, of the Joint Operations Roads Policing Unit, said: "There is absolutely no excuse for drink or drug driving. Alcohol or drugs can seriously affect your ability to drive safely and are one of the 'Fatal Four' most common causes of deaths on our roads.

"You could lose your licence. You could be arrested and be sentenced to years behind bars. You could kill yourself or some other innocent person. It's just not worth the risk.

"A fatal collision causes complete devastation to families, especially when it is caused by an impaired driver who could have just gotten a taxi home instead.

"We also want to remind people of how long alcohol and drugs can remain in your system. You may think you're safe to drive the next morning, but you can still be impaired and if we catch you, you will be arrested."

A spokesperson for the Joint Operations Roads Policing Unit said: "There is no excuse for drink or drug driving."

They added: "All December there will be increased patrols and enforcement activity on our roads to target anyone choosing to drive after drinking and those still impaired the following morning after drinking."

People are urged to call 999 if they know someone is drink or drug driving and it is happening now.

For non-emergencies, information can be provided by calling 101 or Crimestoppers.