Sorry about the "Jack Envy" Philip,I have it too. I have sent the UK distributors and enquiry, but I fear it will be at least £1K....
The answer is clearly to jack one end, put blocks under the wheels and chock, then jack the other end and use axle stands.
I can possibly get to the seat bolts without lifting the car, but it will be easier if the car is a foot of the ground and I'll also be able to have a good look under Aldermog. I have to say that the multitude of bolts sticking out under Aldermog isn't impressive, the neat way us to use the correct length bolts with Domed nuts and lock washers, like these:
Domed Nuts Guess what I'll be using on the seat bolts? There are 6 bolts per seat......