Two off-licences, five bars and one restaurant in the city centre sold alcohol to an underage mystery shopper during recent test purchases.

Each salesperson was issued with an �80 fixed penalty notice.

Officers said they were talking to managers at the premises concerned to see if further action would be taken.

Pc John Webb, said: "It was very disappointing to see so many businesses still selling alcohol to someone who is so obviously under the age of 18.

"Hopefully the message is now getting through to licensees and their staff that the sale of alcohol to under-18s will not be tolerated."

A 15-year-old boy and a girl, 16, visited 18 premises as part of the police operation.