It's an interesting example of how to make a film on a low budget. All the music is from pre-existing music libraries. All the major comedy sequences are filmed in very long takes, and have every indication of hardly being scripted at all, just blocked out and leaving Randle and his experienced team to improvise. The plot is much the same as all the other Randle films - set in the Army (an excuse for cheeking senior officers and the sergeant), and involving a younger well-off recruit whose home they end up in. In the end sequence here Randle adopts a kilt and a dubious Scots accent for no apparent reason.
It's interesting to note that Winifred Atwell plays everything in key C, unlike most jazz-type pianists who tend to use b or E flat. The 'historical' piano she uses at the end if of course an ordinary piano in disguise, with one string on everyh note detuned slightly to produce the 'honky tonk' effect she was famous for employing. (Side note - originally 'honky tonk' meant brothel, something everyone had forgotten by then.)