Aspiring writer Jeremy Lloyd was working as a travelling salesman of rust-proof paint in the late 1950s when he wrote a story called 'What a Whopper' about a Cockney youth who runs tours to see the Loch Ness monster. After delivering paint near Pinewood Studios, he pitched the script to studio chief Earl St John, who bought it.
In the scene with Tony Blake listening to the song 'The Time Has Come' the disc jockey announces that it's by Eden Charity ("He's all I need! ... The big nit!"). This is a cheeky side reference to performer Adam Faith: Adam came from the garden of Eden, and Charity is one of Faith, Hope, and Charity.
Harry Sutton addresses the Commentator, played by Fyfe Robertson as Mr Mitchelmore. Cliff Michelmore and Fyfe Robertson were both famous roving news reporters at the time the film was made.
Freddie Frinton was famous for his comic drunk persona which he does in this film.
Brief footage of King's Road and World's End pub at the start.