Front suspension very rusty, especially the springs. Brake discs badly rusted and then smoothed by recent use leaves a low friction surface and badly worn brake pads. Calipers have partly-seized pistons - quite common
One can clearly see how the car has been incorrectly jacked in the past, in this case bending the floor up a lot. The XJS must only be jacked by the jacking points as here.
Right hand side suspension rust
Badly worn and rusted brake disc, though this picture does not show it well
Oil leak from transmission cooler pipes
Rear suspension badly rusted
Original exhaust system rusty and original, but working ok
More rear suspension rust...
Brake cable outer worn through
The other brake cable worn through, and rusty springs
Floorpan badly rusted next to seatbelt reinforcement. Very common the XJS. Not a good place to have weak metal in an accident...
More rust near the other seatbelt mount