The emotional segment saw Wicked actor Jeff Goldbum, 72, take to the stage and played the piano while photos of beloved stars who had sadly died in the last year were shown on screen.
Prince William, Kate and their children flew to the privately owned island on Thursday, days after Kensington Palace announced that the couple would not be at the Royal Festival Hall ceremony.
William, who is President of the British Academy of Film and Television Arts (BAFTA), took to the academy in Highbury, London, to shine a spotlight on the next generation of filmmakers.
The actress, now 60, was joined by the likes of Deborah Findlay, Mark Strong, Sonia Friedman and Romola Garai for the photocall at Sophie's Soho to promote the theatre adaptation.