have you been underneath the car?lift the carpets and have a look at the floor,lift the boot carpet and have a look to the right and left next to the wheelhouses,lift out the spare wheel and look at recess,stick your hand up behind the rear wheel and grab the arch just behind the kit and work your way around,it will crack or move i guarantee it,at the sides behind the wheel and below the rear bumper have a good poke about it will be soft,in front of the rear wheel behind the kit and also round the back next to the rear tie bar mounting.
to the front,crossmember,bumper mounting holes,bottom of the door pillars,behind the arch liners especially along the bottom edge,where the track control arms mount to the chassis,beind the front wheels on the floor,battery tray area, fuse box area.
underneath,chassis legs at rear are prone to real rot especially near to back panel and swinging arm mounting points
roof next to sunroof and tailgate mountings
tailgate around the window
you will find rot or you are taking the piss,or you are buying a car off a total fuckwit
what miles on the car?