Making (slow) progress, I've now started undoing body fixings at the rear of the car, which was a little less affected by damp than the front end (picture of chassis closing plate below - front end of chassis is toast and contemplating spending the extra and replacing the whole chassis - will decide after I get the body off. However, the air filter casing has also added lightness during its time off the road. And although I was elated by persuading the nyloc nuts holding the servo to come off without shearing the studs, my celebrations were cut short by brake fluid running out of the vacuum pipe. Will do some searching, but I am guessing this is not a good sign? I'd like to keep the servo if possible, so further inquiry is required.
Mechanical woes aside. am starting to prepare the shell for it's re-Kermitting, which is a cheering process. It's had a few small biffs over the years, but I can't see anything too bad so far.