STUDENTS stripped off and ran into the freezing sea at raucous all-night May Day celebrations.
Hundreds of revellers in St Andrews, Scotland, ditched their clothes and bravely jumped into the bitterly cold North Sea.
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Cheeky students strip off and run into the sea during all-night celebrations at St Andrews Credit: Alamy 38
Three girls give a smile despite braving the freezing waters Credit: Alamy 38
Revellers were clearly enjoying themselves as they splashed about in the waves in St Andrews Credit: Alamy 38
Students believe the nippy ritual brings them good luck in their studies Credit: Alamy 38
Brave students bared all as they ran into the waves in the Scottish university town Credit: Alamy 38
In Oxford, one student bares his chest while his friends' dinner jackets are still intact Credit: London News Pictures The St Andrews skinny dip - known as the May Dip - isn't just for fun.
The annual ritual is believed to bring students good luck in their exams.
May Day celebrations have been taking place across Britain today as thousands take part in may pole dances.
Revellers in dinner jackets and ballgowns filled the streets of Oxford to party until dawn in the city's annual ritual.
Thousands flocked to Magdalen College, Oxford, to hear the choir sing hymns as the sun rose at 6am.
Morris dancers and entertainers filled the streets this morning as the all-night celebrations continued.
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Revellers enjoy the three-hour early morning festivities to mark May Day Credit: Reuters 38
A woman waves across the crowd during Oxford's May Day Credit: Reuters 38
A man in braces looks to be in high spirits amid dawn celebrations in Oxford Credit: Reuters 38
Revellers in their dinner jackets look worse for wear as they wait for the sunrise in Oxford Credit: Reuters 38
A trio don their swimsuits to take part in the raucous ritual in St Andrews Credit: Alamy 38
Some brave dippers bared all as they ran into the freezing water in the Scottish university town 38
A weary reveller is given a much-needed piggy back by a pal as they continue the celebrations in Oxford Credit: London News Pictures 38
A dishevelled reveller looks in good spirits as the partying continues into the morning in Oxford Credit: London News Pictures 38
In past years Oxford students jumped into the river on May Day, but it was stopped after dozens were injured in 2005 Credit: PA:Press Association Archive 38
A group of girls and a male friend jump for joy during celebrations at St Andrews Credit: Alamy 38
A man holds his shirt as he wears just a dinner jacket after stripping off in Oxford Credit: London News Pictures May Day tradition sees students strip off and jump into the River Cherwell.
But the practice was stopped in 2005 after 40 students injured themselves jumping into 2ft of water.
The traditions date back 500 years and is attended by more than 25,000 people, who either get up at the crack of join to take part or stay up all night.
May Day has long been celebrated in Britain and dates back to the traditional pagan festival Beltane.
Worshippers flocked to Glastonbury, Somerset, to celebrate the event with ancient customs such as dancing round a May pole.
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A girl in a shirt and trainers dancers amid wild celebrations in Oxford Credit: London News Pictures 38
A man gives his friend a piggy back as they walk to this morning's May Day celebrations in Oxford Credit: London News Pictures 38
Two friends celebrate after completing the May Dip in St Andrews, fabled to bring good luck in exams Credit: Alamy 38
Another pair of students look pretty cold as they take part in the mass skinny dip Credit: Alamy 38
Two girls are still smiling after dunking themselves in the freezing North Sea Credit: Alamy 38
A rowdy group of friends continue the festivities in the streets of Oxford at dawn Credit: London News Pictures 38
Party-goers cling to much-needed coffee as they power through to this morning's May Day celebrations Credit: London News Pictures 38
A reveller looks up to the sky as she waits for the sunrise during Oxford's May Day celebrations Credit: London News Pictures 38
Morris dancers entertain the sleepy crowds as the sun rises above Oxford Credit: Alamy 38
A man blows smoke into the air as thousands gathered to welcome May Credit: Reuters 38
A woman and baby wearing hawthorn sprigs on their hats join in the festivities in Oxford Credit: Alamy 38
Dancers parade through historic Oxford's streets as thousands watch on Credit: Alamy 38
A group of musicians playing traditional instruments and adorned in green entertain crowds in Oxford Credit: Alamy 38
Dancers wearing all white with bells on their ankles perform for revellers outside Oxford's Hertford College Credit: Alamy 38
Two performers channel nature with flowers in their hair and painted on their cheeks Credit: Alamy 38
Three girls wrap up warm and carry a home-made sign welcoming the start of summer in Oxford Credit: Alamy 38
Revellers take part in a traditional May pole dance at Chalice Well, Glastonbury Credit: PA:Press Association 38
People in fancy dress in Glastonbury celebrate the pagan festival of Beltane Credit: PA:Press Association 38
Dancers enjoy the sunshine at Chalice Well, Glastonbury Credit: PA:Press Association 38
A man in fancy dress takes part in celebrations in Glastonbury Credit: PA:Press Association 38
A woman wears a flower headdress during May Day celebrations in Glastonbury Credit: PA:Press Association We pay for your stories! Do you have a story for The Sun Online news team? Email us at [email protected] or call 0207 782 4368