The cream of British comic acting talent could not disguise the somewhat thin script, that was clearly intended as a wartime morale booster, but somehow appeared past its sell-by date, in 1947. Its true length should have been half an hour but they didn't have TV then.
Nevertheless it has some fascination as a period piece, and we are kept in dull suspense wondering why they are waiting for the visit of a monarch, an interesting twist, which gives it its patriotic wartime message.
The best cameo is undoubtedly Yvonne Arnaud as the scatty Bordello keeper (who - for the benefit of those below a certain age or not French or British - continued to have great success on BBC comedy radio throughout the 1950s till her death aged 66.)
Robert Morley too, as usual, never fails to entertain.