Elliot - many thanks. I've managed to get a good price on secondhand parts so I'll leave it just now. Can I have a price for the following bits as well though, including postage (I'm near Aberdeen):

Plastic capnut with washer 51161943122
Fillister head screw 07147146367
Expanding rivet 07130702966
Bracket underfloor panelling, left 51752753165
Bracket underfloor panelling, right 51752753166
Hex bolt with washer 07147117693
Hex bolt with washer 07119905871