I personally don't see what all the fuss about the class 7 test instead of a class 4 is. A class 7 costs about £3 or £4 more than a class 4. Just had one done for £57.70.
Any garage that can do large vans can do the class 7 test and most garages that do landrovers should be able to do them as well, if they cant then it means that they shouldnt be lifting the vehicles in question up on their ramps for any purpose!
I have 1988 110 and an 02 110 and both of these have been getting class 7 tests for years with no problems. I also find that as I use a commercial vehicle garage its cheaper on labour costs and the work gets done quicker!
I think what you need to do is register the correct weight of your Land Rover with Vehicle Excise, they used a blanket weight for all which is incorrect. The higher 3.5t applies to heavy duty suspension models and 127/130 inch wheelbases.
I've got to re-register mine soon so I'll post details when I know more, there was a letter in Land Rover Owners Intl a while back about this.
New boat is here, very happy!
Before writing off to change your V5 weight, I would check what is stamped on the VIN plate under the bonnet. The revenue weight of most 110's is at least 3050kg which is still in a class 7 test bracket. From memory its only really the station wagons that are under the 3000kg weight.
It doesn't matter what the V5 says as if the tester checks the plate and discovers its over the 3000kg weight he wont test you (or at least shouldn't as it wouldn't be a valid MOT test) The only number that matters is the one stamped on the VIN plate.