So today, in hopefully a conclusion to this sorry tale, I put a deposit down on a newer D5 that happened to come into one of our local LR dealers over the weekend. A 68 plate facelift 3.0, Loire Blue, tan interior and just about every possible option
It's an ex JLR vehicle (OE registration) and was allegedly a former VIP car - which I could believe, or it could be total tosh, either way, it's rather lovely. Slightly oddly, it's had 'downgraded' 20" wheels, which I actually prefer. It's a newer, lower mileage and a better car than the green one, but then again, it was more expensive.
The car needs its first MOT and hasn't been through their workshop for checking, but was fully serviced at the dealer about 6 weeks ago. I can't wait for it to be ready