While studying architecture at the Regent Campus of the University of Westminster (formerly Regent Street Polytechnic), between 1962 and 1965, Roger Waters, Nick Mason and Richard Wright met and formed a band originally called Sigma 6.
They first performed in the common room and at student parties. Ah, yes, I almost forgot to mention that they eventually became the Pink Floyd, of course.
The plaque was unveiled by Roger Waters and Nick Mason in 2015.
Address: 309 Regent St, Marylebone, London W1B 2HW