found: Fireball XL5. Vol. 1, 2002:title frame (David Graham)
found: IMDb website, viewed May 4, 2017(David Graham (II); David Graham was born July 11, 1925 in Hackney, London, England as David Michael Graham. He is an actor and writer, known for Supercar (1961), Stingray (1964) and Fireball XL5 (1962))
found: Wikipedia, viewed May 4, 2017(David Graham (actor); David Graham (born 1924 or 1925) is an English character actor and voice artist. Graham is known for his voice work for the series Doctor Who, Thunderbirds and more recently the voices of Grandpa in Peppa Pig and Wise Old Elf in Ben and Holly's Little Kingdom)
found: OCLC, May 4, 2017(headings: Graham, David; Graham, David (Actor))