The essential car wash.

[Tony Griffiths]

I can't decide if it's good old harmless seaside postcard fun or the groundwork for Jimmy Saville etc...either way it makes me uncomfortable.

Did you watch the video? It's good, harmless fun (though not so harmless if he drove off the stage, of course). In those days, all plays and similar productions were subject to a close examination by the Lord Chamberlain, the official censor, who was in charge of an office, "The Examiner of Plays," active from 1737 to 1968. Details at: https://en.wikipedia.org/wiki/Licensing_Act_1737