Turboman
Mab An Gov
see my avatar <<<<<< .. as you probably can see i know little about Land Rovers, ACTUALLY I KNOW A DAMN SIGHT MORE NOW THAN I DID LAST AUGUST, the vehicle was checked over by the Landy Owners club and we came to the conclusion it was indeed a chopped down chassis from a 110..
That is a very interesting and unusual machine, someone has obviously gone to quite a bit of trouble to make that.
Hard to say without detailed inspection, but like the others I would guess disco chassis with modded One Ten body. If all the work is to a good standard I dont see any reason it will fail the Vosa inspection.
Best of luck with that, and would be interested to hear what it is if you ever find out.