Belcher notices the Union flag flown by the governor bearing the slogan I'm Backing Britain and calls them "raving mad". Cast Sid James as Sir Sidney Ruff-Diamond Kenneth Williams as The Khasi of Kalabar Charles Hawtrey as Private James Widdle Roy Castle as Captain Keene Joan Sims as Lady Joan Ruff-Diamond Bernard Bresslaw as Bungdit Din Peter Butterworth as Brother Belcher Terry Scott as Sergeant Major MacNutt Angela Douglas as Princess Jelhi Cardew Robinson as The Fakir Peter Gilmore as Private Ginger Hale Julian Holloway as Major Shorthouse Leon Thau as Stinghi Michael Mellinger as Chindi Wanda Ventham as The Khasi's First Wife Alexandra Dane as Busti Production Writing The screenplay was written by Talbot Rothwell. Peter Rogers had liked Rothwell's writing so much after he had submitted the script for Carry On Jack that he asked him to become the Carry On staff writer; Rothwell wrote a further nineteen Carry On films. The film's fictional Highland infantry regiment of the British Army was known as the 3rd Foot and Mouth Regiment. It is a regiment of Highlanders, known locally as "the Devils in Skirts" for their tradition of not wearing anything beneath their kilts. The regimental tartans and bonnet badges designed for the unnamed Highland regiment in the 1960 film Tunes of Glory were rented for the production to kit out Carry On Up the Khyber's 3rd Foot and Mouth Regiment. The pith helmets and webbing were borrowed from the 1964 classic war film, Zulu. Filming The movie was shot between 8 April and 31 May 1968. Interiors were filmed at Pinewood Studios, Buckinghamshire. Heatherden Hall, the administrative offices of Pinewood Studios, was used as the governor's residence. The scenes on the North West Frontier were filmed beneath the summit of Snowdon in North Wales. The lower part of the Watkin Path was used as the Khyber Pass with garrison and border gate. In September 2005, a plaque was unveiled in Snowdonia to mark the spot of where the film was shot. Release The film was the second most popular movie at the UK box office in 1969. Reception Carry On... Up the Khyber is frequently cited as the best entry in the series. Colin MacCabe, Professor of English at the University of Exeter, labelled this film (together with Carry On Cleo) as one of the best films of all time. In 1999, it was placed 99th on the