try all the local transport companies, we used to let a few people park in our yard for a fee, also try garden centeres as our out based drivers who took the lorries home some of them parked in garden centres for a small fee.
Also try storage companies, also ring companies based in industrial estates some of them will of let staff go so will have free parking spaces and a bit of extra money will help.
I will try and think where else out out based drivers used to park and will let you know