B Barnard Castle Billingham Birtley Bishop Auckland C Chester le Street Craghead Colliery Industrial Estate Crook D Darlington Durham E Easington Colliery F Framwellgate Moor H Hartlepool I Ingleby Barwick L Langley Moor Langley Park N North West Industrial Estate O Ouston P Pelton Fell Peterlee Q Quarrington Hill S Seaham Seaham Grange Industrial Estate South West Industrial Estate Spennymoor St. Helen Auckland Stanhope Stanley Stockton-on-Tees T Thornaby Y Yarm Recently updated companies Most viewed companies