David Walliams was in a sombre mood on Tuesday as he penned a heartbreaking tribute to songwriter Leslie Bricusse who had died earlier in the day.RELATED: Remembering the beloved Gogglebox stars who have sadly passed awayLeslie's agent confirmed that the legendary artist, who had written the lyrics for Bond themes Goldfinger and You Only Live Twice, alongside many others, had passed away in his sleep at the age of 90.