Imperial College of Science, Technology and Medicine

The Imperial College Union was established in 1907. There are also four constituent unions, the Royal College of Science Union, Royal School of Mines Union, City & Guilds College Union and Imperial College School of Medicine Union. The governing body of the Unions is the Council. The Executive, comprising Union officers, has responsibility to carry out policy. Clubs and societies, financial affairs and other functions are organised through committees.

Alumni Groups and Associations exist to keep former students in touch with each other and with the College. The Old Student Associations became Constituent College Associations in 1992. All are predominantly volunteer organisations but receive administrative support from the College's Alumni Relations office. The City & Guilds College Association was formed in 1897, and until 1992 took its name (Old Centralians) from the original Central Technical College of 1885. The Twentyone Club was established in 1922 as a correspondence club for former students of the City and Guilds College. The Links Club was established in 1926 as a similar club for the Guilds. The Royal College of Science Association was founded in 1908 under the Presidency of H G Wells. The Royal School of Mines Association began life as the Royal School of Mines Old Students' Dining Club and the first Annual Dinner was held in 1873. The Association was formally inaugurated in 1913. The Chaps Club was established in 1921, as a Club for past students of the Royal School of Mines.
The Hofmann Society was established in 1933 for Organic Chemists in the Royal College of Science. The H G Wells Society was established in 1963 for students and staff.
The Imperial College Representative Council was formed in 1969 to consider matters of general college interest, and comprised representatives from staff and student unions within the college.