On the 26th November 1997 a bust of P.M.S. Blackett, sculpted by Sir Jacob Epstein, was unveiled in the Blackett Laboratory to mark the centenary of Blackett’s birth. 
Patrick Blackett was head of the Department of Physics from 1953 to 1963 and was responsible for the design of the Physics building (since renamed the Blackett Laboratory). He was awarded a Nobel prize for research carried out while he was at the Cavendish Laboratory. He later became president of the Royal Society and a life peer. Talks about Blackett were given at the ceremony by Sir Bernard Lovell and Norman Barford. The bust, which is located in the main entrance hall of the Physics building, was unveiled by the president of the Royal Society, Sir Aaron Klug.
We have no moving images or sound recordings of Blackett in the Imperial Archives. I have found what must be one of a few moving images of him on the British Pathe web site and you can see that short clip below, but even then he’s mostly in the background.
During the unveiling ceremony there were speeches by Sir Bernard Lovell, Norman Barford and Sir Aaron Klug who then proceeded to officially unveil the bust which was mounted in the main entrance of the building.
Colin Grimshaw January 2015