Born Reginald Leigh Dugmore on 20 November 1891 in Richmond, Surrey, England (part of Greater London since 1965), he came from a theatrical family; his father was actor and opera singer W.H.

In 2020, Kino Lorber released 4K restorations on DVD and Blu-ray of three of Denny's silent comedies: The Reckless Age, Skinner's Dress Suit, and What Happened to Jones?

They had been in a West End production together in 1902 in London,[3] they were both veterans of the RFC (and its successor, the Royal Air Force) and were both flying and making films in Hollywood in the 1930s.

At Loraine's wedding in 1921, his best man was an Air-Commodore who had been in charge of the RFC radio control weapons and developed the first powered drone aircraft.

In 1939, he and his partners won the first military United States Army Air Corps contract for their radio-controlled target drone, the Radioplane OQ-2.

[7] Denny married actress Irene Hilda Haismann on 28 January 1913 in Calcutta; both were with the Bandmann Opera Company.

[8][9] Denny died on 16 June 1967, aged 75, after suffering a stroke whilst visiting his sister in his home town of Richmond, England.