Hadn't considered the Novichock.... best to wipe Salisbury off the face of the uk. Could use all the rubble to make a new boris island airport.
but seriously, with all the items fixed up, the car is worth about £1500.
german exhaust (Ernst) complete system £80
brakes disks and pads (also from germany) £25
pair of hoses £4 each
Used shocks from ebay £5 each
sorted.
i get my parts form these guys:
https://www.qp24.de/en-gb
you could get the parts and then simply have a small local independent mechanic sort it for you. The work might be £100 cash if you're friendly....