In 1954 he founded Roy Stewart's Gym in Powis Square, North Kensington, and ran the Caribbean club and restaurant The Globe, in Talbot Road until his death.

Other film appearances include Carry On Up the Jungle (1970), Leo the Last (1970), Games That Lovers Play (1971), Twins of Evil (1971), Lady Caroline Lamb (1972), Stand Up, Virgin Soldiers (1977) and Arabian Adventure (1979).

[1][2] In a role, possibly his earliest, Stewart appeared in a television advert for Fry's Turkish Delight, playing a snake charmer.

In 1973, he played the part of Quarrel Junior in the James Bond film Live and Let Die starring Roger Moore.

[6] Stewart ran a basement gymnasium at 32A Powis Square, Kensington, west London which was opened in 1954.

Some actors trained there too, one of them, David Prowse, a Commonwealth Games weightlifter in 1962, went on to play Darth Vader in the film Star Wars.