Warning at 'Royal university'

The Fife university has more than 5,000 students

Students at St Andrews University have been warned they could be expelled for any bad behaviour during traditional festivities, it has been reported.

The move is aimed at avoiding chaotic scenes as students at Prince William's chosen university celebrate the annual Raisin Festival.

The event, due to take place at the weekend, includes a giant food fight.

The tradition dates from the 16th century, when new students would thank senior students who looked after them.

Neither the university nor the local authorities will tolerate the sort of anti-social behaviour which has recently become an issue

Professor Colin Vincent, acting principal

They would show their gratitude by giving the older student a pound of raisins, although this has since been replaced by a bottle of wine.

All 5,500 students at the university - where Prince William will study from next year - have received a letter from acting principal Professor Colin Vincent, according to the Scottish Daily Mail.

The paper says he has warned them that any bad behaviour at the event could result in drastic action.

It reports that Professor Vincent told students: "Raisin Weekend should be a time for celebration, not recrimination.

"You must not put your own safety or that of others at risk, nor should you jeopardise your future career by unacceptable behaviour.

Prince William is currently on a gap year

"Neither the university nor the local authorities will tolerate the sort of anti-social behaviour which has recently become an issue.

"The university's disciplinary procedures will be vigorously applied if anyone brings it into disrepute."

The university's disciplinary board has the power to fine, suspend and ultimately expel students.

The university is keen to prevent any poor behaviour after five students were arrested following alleged disturbances during a protest by hundreds of students.

The protest took place after the local licensing board revoked the union bar's late licence.

Prince William, who is currently on a gap year, will start his four-year History of Art MA (Honours) next October.