While looking for something totally unrelated this morning, I stumbled across this website:
https://mullard.org/collections/vint...rial-base-no-9
What struck me was the use of this aerial base on the Wolsley Police Cars from 1940 to 1955. I wonder if that was it's original use and it was adapted for the B-Set No. 19 Wireless system, or vis a versa? Be interesting to see what type of radio the police were using back then as well.
That aside, this is a rather interesting site as far as vintage wireless parts are concerned.
David