Although the City and Guilds College was for much of its life governed through Imperial College, the City and Guilds Institute, together with a number of livery companies in their own right, maintained seats on the governing body (the Court) of Imperial College until its reorganisation in 2002. In 2002, under Imperial College's new faculty structure, City and Guilds College, along with the other constituent colleges, ceased to exist as a separate entity. In September 2013 the Mechanical and Aeronautical engineering building at Imperial College was renamed City and Guilds Building to acknowledge the historical legacy. Its name also survives however in the City & Guilds College Union (CGCU)—the student union for the Imperial College Faculty of Engineering and the Imperial College Business School—and in the City & Guilds College Association (CGCA).