Look, this is Dick Barton, not War and Peace. I think some reviewers are imposing their own views of what 'entertainment' should be. This is radio entertainment from the 1940's. (These are actually re-recordings of the original, British, productions, made in Australia, though you would hardly know it). Very much aimed at youngsters of the time (and their dads), the sort of Ripping Yarns that the Monty Python team would later take the Mickey out of.
Although the story is not as well written as Dick Barton and the Paris Adventure, approach it in the right frame of mind and you may well find this an enjoyable four hours of stiff upper lip, tongue-in-cheek Britishness, although it has an astonishing, even frightening level of violence (quite sadistic at times) by today's standards.
I found it an enjoyable listen; the sound quality does distort at times, but the ear adjusts.
Certainly worth a try for fans of Dick Barton, and for anyone interested in the history of radio entertainment.