Only four drivers were charged with drink driving during the campaign's first week, the force said.

It has thanked Manx people for "bucking the UK trend which is upward" and urged islanders to continue their restraint during the Christmas period.

Drivers have been breathalysed during roadside checks while 173 defective vehicles have also been stopped.

Sgt Mark Britton said: "In this last week before Christmas when office parties are more frequent the temptation can be to drink and drive - it simply isn't worth it.