Having just taken charge of an MT500 I can confirm that while Serving in Germany 9mm SMG was standard but we had a few issues with CND stringing wire across the roads. A DR with an SMG slung came off and was badly injured by the cocking handle in his back. We were then issued with 9mm Bowings and two mags of 9mm live rounds. This would have been around 1987 -88 or 89 worn on a webbing belt. With 58 pattern Webbing bungeed on to the back rack.
The wax jacket Ii was issued had a little gold union jack worn on lapel it had a belt and think bottom pockets as well as usual two chest pockets. Unfortunately it got mildew in my attic after leaving and was thrown a long time Doh !!!