Richard Maibaum episode "The Medal" for "Combat!" (1963) then wrote "From Russia with Love" (1963), sharing credit with Harwood. Maibaum worked on "Goldfinger" (1964), on which Paul Dehn also did work. He was one of several writers on "Thunderball" (1965). "You Only Live Twice" (1967) was the first Bond film on which Maibaum was not credited as a writer, the producers using Roald Dahl. Albert Broccoli wanted to produce a non-Bond movie, "Chitty Chitty Bang Bang" (1968) and Maibaum did some work on the script. Maibum received sole script credit for "On Her Majesty's Secret Service" (1969), starring George Lazenby. He did
Chitty Chitty Bang Bang working for the Baron. All of a sudden, Chitty deploys huge flotation devices and transforms into a power boat, and they escape Bomburst's yacht and return to shore. The Baron sends two spies to capture the car, but they capture Lord Scrumptious, then Grandpa Potts, mistaking each for the car's creator. Caractacus, Truly, and the children see Grandpa being taken away by airship, and they give chase. When they accidentally drive off a cliff, Chitty sprouts wings and propellers and begins to fly. They follow the airship to Vulgaria and find a land without children; the Baroness Bomburst abhors them