Pi is the name of the official student publications of the University College London Union.

Pi was originally launched as a newspaper. In the aftermath of World War II, there was strong popular support amongst college and UCL Union officials for some sort of community project that would bind together the rapidly expanding campus. Pi was conceived as a fortnightly news-sheet, written and published internally by UCL students. It was first published in 1947.

The founding editor was Richard Lubbock, a first-year pre-med student, who modelled the four-page broadsheet after the style of an American high school newspaper. The purpose was to provide news and entertainment for students, and journalistic experience for the editorial team.

The name, Pi, was chosen in honour of the Provost of the College at that time, Sir David Pye.

The paper was extremely popular, even charging a small fee for each issue. Though the initial focus was on student politics, as the paper recruited a more diverse base of writers and journalists, new areas began to receive attention - sports became a prominently featured section, as well as academic discourse and regular interviews with London celebrities. Pi drew favourable comparisons with other heavyweight student newspapers, such as The Oxford Student and the LSE Beaver. British journalist and TV personality Jonathan Dimbleby was once the editor. Former contributors include TV psychiatrist Raj Persaud, Chief Executive of healthcare group Circle Ali Parsa, Chief Executive of Maitland PR, Neil Bennett and the Guardian's racing correspondent Greg Wood.

Ot Pi is a Spanish bike-trials rider, often regarded as the man responsible for the discipline's origin.^{[citation needed]} He has won several world titles^{[citation needed]} and is featured on a number of videos that showcase the sport.

Ot Pi (aka "Hot Pie") Isern made his U.S. debut at the age of 17 at the Mammoth Mountain World Mountain Bike Championships in August 1988 where he easily clinched the Trials competition. His fluid style and signature 360-degree dismount from atop boulders, logs and planks, drew crowds and amazed all onlookers. As Zapata Espinoza wrote in his racing re-cap:

Ot Pi is the current World Champion in Europe, and now in America, too. The quiet rider from Spain rides for Monty, which is his father's bicycle company, and he is the winningest rider in the world today. Ot wow'd the crowd with his ability to clean all the sections he rode. The trials event took over four hours to complete and from beginning to end hundreds of spectators stood back in awe at the accomplishments of the better riders. When the event was through, Ot Pi gave a special performance and twice did an aerial 360-degree full turn off a ten-foot-high log assemblage - incredible!