Eva Bros on High Street East in Scunthorpe has a TDS in there. Believe its a Red Saloon, and its sat on top of a Red 318i.
Ellsons just off Snotter Bottom in Scunthorpe also had a couple in, not sure if they were Diesels though. Both deep green coloured.
Edleys on Snotter Bottom had a Red Coupe in before christmas, not sure of model though.
Those are the 3 I know have BMW's in for breaking in the Scunthorpe area. I have a load of E36 parts too, but none from Diesels, you could try Mess on here as I know he has a diesel so may have spares lying around.