Can't believe you are struggling to find 'grungy' in Doncaster, its a bit grim all round!!
How's about the old units under the north bridge near the college? Rail yards? Plenty of scrapyards.
Probably some dis-used steel works buildings around Scunthorpe.
Sorry I can't be more specific, but that's where I'd start looking.
) and i'm struggling for ideas on location. Wanting that 'grungy' look. Any suggestions?