I've been scouring the internet for an owners manual for a 1990 LHD TDI.
I have only found these from Brooklands Books on Amazon and other sites
(there are both workshop manuals which are easily found on the internet as well as the owners handbooks which are not)
They are much cheaper than what is on DIY and some of the other manual for-sale sites.
What I do not know is whether they are true Land Rover products or not
maybe someone who has one can confirm?