Wow. Some super work there. Many thanks for the links
.
The comments about the variations in armament between some of the Vosper craft reminds me of a story I heard years ago. My elder brother's then possible/prospective father-in-law had served as skipper of a MTB/MGB in the Channel and told us about an occasion when his flotilla had got into a punch-up with a group of E-boats, off the French coast. He described how, after the shooting was all over, they found the E-Boat they themselves had knocked off beached and abandoned, with no-one around on the shore.
Apparently seeing a golden chance, Mr Ludlow said they went in alongside to take a look and discovered the crew had left all the things they shouldn't have; papers; log books; the works. While some nabbed all the documents they could, he said some of his gun crew went over with tool bags and came back a surprisingly short time later with one of the E-Boat's main armament, plus every bit of ammo they could find. He said his gun crew wanted one because they thought it was a decent bit of kit and would give them more clout.
The most interesting part of this, for me, is that - as Mr Ludlow put it - after they had used the gun in several engagements they had to go "replenish" their supply of ammo. He always told his commander that he was taking his crew out for some "training exercises" (which apparently left the chap impressed with this particular boat's zeal) but was actually hunting E-Boats so they could nab more ammo. Seems they did this on such a regular basis that E-Boats spotting a lone MTB mooching around near their side of the ditch used to disappear pronto.
Leaves me wondering just how unusual some boats' armament was.