MILL LOCK INVESTMENTS LTD Company number 13747675 · Monitor this company Active Overview People 2 Financial Control Documents Analysis Location Related Registered office AddressOffice 108, Alton House 27-31 Grange Road, Darlington, County Durham, England, DL1 5NA PostcodeDL1 5NA Companies at this postcode 26 Average house price in DL1 5NA £301,000 (5 sales) Map