Around 200 vehicles were stopped and drivers breathalised during drink driving checks on Saturday.
Four teams of East Cambs police officers were on active patrol with the aim of cracking down on drivers who ignore the legal alcohol limit.
PC Gerry Cronin said: “We’ve had one chap who blew 10 - the legal limit is 35 microgrammes of alcohol to 100 millilitres of breath.
“He told us that he’d drank a glass of mulled wine about half an hour ago.
“He was pretty nervous when he was blowing into the tube.”
East Cambs also warned: “It just shows you that it’s really not worth it.
“Drink or drive - don’t risk it! If you’re thinking about it, better call a taxi.”
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