Other colleges frequently hold winter balls, such as the popular Selwyn Snowball, who recently had acts such Tinchy Stryder and Mumford and Sons headlining.
[3] It is thought they developed from the celebrations surrounding successes in the May Bumps - a set of rowing races which used to take place before the university tripos examinations in May each year.
[5] As the 20th century progressed the formula of the balls varied very little until the 1960s, when students began to question both the cost and perceived stuffiness.
[5] As the all-male colleges began to allow female students, the ubiquitous double tickets began to be bought by pairs of students rather than inviting a date from outside of the university, causing a corresponding reduction in ticket sales; in 1991 Sidney Sussex and Downing merged balls, and in 1992 Pembroke cancelled its ball.
When in 1993 there were a reported 16,000 tickets available to an undergraduate population of 10,000, Selwyn, Emmanuel, Girton and Peterhouse were all forced to cancel their balls, though Trinity and Magdalene sold out as usual.
Today, they take place in May Week, which usually starts on the second Thursday of June following the end of exams, and which includes Suicide Sunday.
Most balls have fundamental similarities: all will offer guests a variety of food, entertainment, and a selection of alcoholic drinks.
While all claim to offer luxury (and many deliver), some have distinctive hallmarks: Peterhouse is famed for its ferris wheel, Magdalene for its dining, Trinity for its exceptional fireworks and flame display, Clare for its entertainment lineup and St John's for its party atmosphere.
[9] With tickets priced at over £150 and in short supply, students often try to gain unauthorized access, climbing high walls, arriving dressed as gorillas pretending to be part of the evening's entertainment, and posing as journalists.
Typically, college porters are joined by both student and professional security staff and, at larger balls, police[citation needed] to identify and apprehend the crashers.
More courageous crashers can be seen swimming down the river Cam holding their clothes in a plastic bag above the water in an attempt to enter colleges from the banks.
The college used to hold a traditional May Ball, but this was banned by the local police after The Stranglers played in the 1970s and caused a crush.