Containing material from both the first 12 films, released by Anglo Amalgamated (who, by this time, had become EMI), and the latter Rank Organisation titles, the companies worked together to release That's Carry On!.

The links with Barbara Windsor and Kenneth Williams took two days to film.

The title That's Carry On! pays homage to the inspiration for the film, MGM's own 1974 compilation of its musical pictures, That's Entertainment.

Previous film Carry On England is not featured in That's Carry On!. It had still been in cinemas during pre-production of the compilation title.

That's Carry On! was released as a double-feature with the thriller Golden Rendezvous.