just a quick update:
I met up with "Marcel", as kindly recommended by "paul58" above and he seemed a nice genuine chap. When I explained my predicament, he asked "Homologation? Who told you that? I've imported loads of these over the years. Does it have side-steps? Does it have a tow-bar? Factory-fitted?, etc.
music to my ears. I have to get a couple of items sorted, then I shall give him the go-ahead.
Also, I e-mailed Land Rover and they replied that they would almost certainly be able to supply a Certificate Of Conformity if required. there would be a charge of £100