A blitz on fake identification and teen boozing has been launched to stop youngsters getting their hands on alcohol during the summer holidays.

Off-licences have been sent packs containing information about asking customers for proof of age and the consequences of selling alcohol to under-18s, and police and trading standards now plan a test purchasing campaign.

Peter Hack, manager of Oddbins, in High Street, Oxford, confiscates a fake ID approximately once a month.

Last week, he confiscated a fake ID from a 16-year-old boy. He said: "I was worried at one stage that we had got it wrong because it was very realistic.

"Because of the Internet, these fake IDs are getting much better. That really worries me. We check around five or six times a day and have to turn away on average one person a day.

"But the vast majority of young people are learning now they should have real ID on them and we aren't getting more fake IDs, the quality is just better."

Trading Standards manager Richard Webb said: "The exercise is as much about raising awareness of the issue of underage alcohol sales as it is about rooting out irresponsible traders."

Tony Cope, police licensing manager, warned: "Alcohol can sometimes lead to violent behaviour and sexual assaults."

Judith Heathcoat, county council cabinet member for community safety, said: "We know that illegal alcohol sales are a major driving force behind anti-social behaviour involving young people."

Staff caught selling alcohol to underage drinkers will be fined £80. Pubs and off-licences which fail three test-purchases will lose their licence.