Mr. Mike, I like the story concept, sounds like it will be fun. But something I picked up from your blurb was that your Brit doesn't 'sound' like a Brit. Either tone or language, I'm not sure, but just not quite Brit enough. (yes, I'm a published author too.)
As for your Land Rover, a friend of mine was stationed at Lakenheath and bought a 88" wheelbase model there in the UK, but built to North American standards i.e. left hand drive. He painted it in a British Army camo pattern. We had a lot of fun in that truck.