You can buy it from the DVLA for about £300.
Don't believe everything you get from DVLA!! Paying for specific information like this is a waste of money, sorry. When I bought the yellow 2.2 Murena in 1997, the registration document claimed it was a four door Talbot saloon and there were two completely different Murena chassis numbers on it! So until I corrected it, this car would never have shown up as a Murena. Also our registration document only demands the manufacturers name in reality, and the model is not necessarily filled in or accurate. For instance on my other two Murena the registration document has '2 axle rigid body coupe' under the model/type heading, so again if you search for Murena they will not show up. One has Talbot-Matra as the manufacturer and the other has Matra. So what you get from a search will depend entirely on what information was put in, and how you phrase the search.
I'm sure there are more than ten Rancho still on the road in the U.K. since we have that sort of number in our club and I know of, or have seen quite often a number that are not in the club.
DVLA information is only as good as the original information provided by the person filling the form, and I have learnt over the years how inaccurate that is. Now we have a computerised M.o.T. system, we the testers, are effectively 'cleaning' and correcting their database by supplying accurate details of what many vehicles actually are, not what they have, but they will still not change something like model type except in extreme circumstances. Mostly it will be things like accurate VIN, registration numbers and colours. I have had to correct a number already myself. Since we have approx. 19,000 M.o.T. stations with varying numbers of testers, imagine how many mistakes are being found.