Had a few spare minutes after work so decided to get the seats out to see the state of the carpet. All the seat bolt holes are intact thankfully so no welding needed there. Carpet is covered in crap but otherwise in really good condition. Will have to get in there with the dust pan and brush before I can attack it with the dyson.
Also a nice little find, when the car turned up I found 50p under the seat, but today I struck gold lol, £3.70! Making a grand total of £4.20