Brilliant, thanks for that David, and to all for your responses. I’ll take photos in the morning when it’s light and go from there. I had heard anecdotally that it was army as there was some green paint but I put this down to wishful thinking!
I need to get new Glo Plugs so need to know what engine it is.
The VIN implies earlier (1984) but that was when it was a petrol engine, with DVLA saying 1988 with the Diesel engine that came from the ARMY? Confused, but will post tomorrow and see if we can unpick the mystery.