Festive revellers are being warned they will be named and shamed if they break the law on the roads this Christmas.

Sussex Police are warning that motorists charged with drink or drug driving offences throughout December should expect to see their names published as part of a continued crackdown on offenders.

The continuation of Operation Dragonfly follows the success of Sussex Police's previous Christmas and summer drink drive campaigns.

Posters will also be put up across the county at sites where offenders were stopped during the Christmas 2013 campaign to highlight to drivers in those areas that they could be caught if they get behind the wheel while over the limit.

Road policing unit officers will be on dedicated patrols looking for offenders while teams will respond to tip-offs from members of the public who see someone they know has been drinking getting into a car to drive.

Stop checks will also be set up at locations across the county, in particular at locations where there is intelligence that there has been a history of drink-driving.

For the first time, the December campaign will be run jointly by Sussex Police and Surrey Police alongside Sussex Safer Roads Partnership, Drive Smart in Surrey and the independent charity Crimestoppers.

During December last year, 211 motorists were arrested on suspicion of drink or drug-driving offences with 135 convicted of offences so far.

The summer crackdown on drink-driving has seen 99 motorists convicted already.

Superintendent Jane Derrick, the head of roads policing across Sussex and Surrey, said: "Officers are out every day across Sussex and Surrey targeting those who are driving after drinking or taking drugs but there will be an increased focus in December in the lead up to Christmas and the New Year celebrations.

"Some people who would never consider mixing drink or drugs with driving throughout the rest of the year may mentally switch off at their Christmas party and get behind the wheel afterwards.

"This year we want people to plan ahead so that before the last drink has been drunk they know how they are getting home and don't even consider driving themselves.

Ms Derrick also warned that sleep and strong coffee would not be sufficient to make motorists legal following a late night excessive drinking.