In the first film, "Dr. No", Boothroyd is played by Peter Burton in only one scene, in which he replaces Bond's .25 ACP Beretta 418 pistol with the signature .32 Walther PPK handgun. He is referred to by M as "the armourer," and later as Major Boothroyd. Scheduling conflicts prevented Burton from reprising the role in "From Russia with Love", although he made two later uncredited appearances in Bond films, first as an RAF officer in "Thunderball" (1965) and later as a secret agent in the satirical "Casino Royale" (1967).