I would check the chassis, get underneath it with a torch and screw driver/pry bar and have a good poke around, looking for rust, look for play in the track rods, bushes etc.
Check the state of the rear disks, they can seize so they will have rust/pitting on them if the pads are not coming in to contact
Check the doors all open, rear door not opening from the inside is now an Mot fail, this is quite a common fault
on the test drive, get it up to temp, make sure the heaters are blowing hot, test all the lights windows work
look out for leaks, sun roof etc and check the diff lock/high low range shifter is not seized
Wish I would have know all this when I bought mine!..been on a steep learning curve since!