Thanks guys.
Brian - turns out that since the car is more than 10 years old, it doesn't need the conformance stuff at all. It just needs an MOT, and therefore the lights / indicators etc.
Dave - the car's not perfect - air con doesn't work for example. Nor does the cigar lighter which wouldn't normally be a problem (I don't smoke) but I was relying on my GPS unit to get me home and without power, it's battery ran out early in the day leaving me completely blind! Had to buy a map, and the map I bought was rubbish so I wasted some time going round in circles. The engine feels very strong, and the car feels really tight and well planted on the road so hopefully the major things are OK. I would be interested to let you drive it and compare it with yours.... probably a more meaningful comparison that way round!
I had also forgotten how much headroom you lose with a sunroof! I have a very long torso (and short legs) so I always have headroom problems with cars... and the sunroof takes a couple of crucial inches away. It's probably not the end of the world because it won't be a daily driver.. but if I could, I'd magically make the sunroof disappear so I could have my seat how I want it and feel more comfortable.
The car in general terms is amazing though. They really don't make them like that any more - everything about it feels solid and built to last.
So - things needed are
a) Headlamp switch, foglight switch and side indicators - I need help on this because whilst I know which end of a drill to hold

I'm not confident using the right type of bit at the right speed to make sure paint doesn't melt or flake or chip... and if I bought some rust preventer I'd probably buy the wrong stuff that's cheap and doesn't work properly etc etc etc
b) Air con - hopefully just needs re-gassing?
c) Cigar lighter (for GPS) - I did check fuses but couldn't see anything blown. Will investigate further.
d) Radio - would be nice to get something out of the speakers. Not crucial - I wouldn't drive the car to listen to the radio - but it ought to work. I may be able to do this bit myself.
Having been warned by everyone about letting the turbos cool down properly I was somewhat concerned when I rounded a bend after some high speed driving to find a traffic jam..... probably not an ideal way to start but what can you do.
BTW why is the differential oil temperature displayed? I assume it's displayed so you can take action if it gets too high? What is too high? It seems fine at high speed but the temperature rises in traffic.