Carry On Up The Khyber (1968, dir. Gerald Thomas)

British rule in 1895 India is threatened when an embarrassing military secret leaks. Despite awkwardness (blackface used for repertory cast villains) this is the high-point of the Carry Ons, a sharp satire drawing on Kipling and siege actioners like Zulu. Still works as a comedy and as an acute portrait of the arrogance of the English, the class system, and of Empire. Of, er, ‘its time’, but recommended nevertheless.

Here’s the trailer.