B Billingham Birtley Bishop Auckland Blackhall Colliery C Chester le Street Coundon D Darlington Durham F Ferryhill H Hartlepool L Langley Moor N Norton P Peterlee S Seaham Shildon South Hetton South West Industrial Estate Spennymoor Stockton-on-Tees T Tursdale W Windlestone Wingate Recently updated companies Most viewed companies