| Simpson Bros | 01748 818542 | | 20 St. Pauls Drive, Brompton On Swale, Richmond, DL10 7HQ |  Map & Directions |
| C R Brown | 01748 818761 | | 13 Station Road, Brompton On Swale, Richmond, DL10 7HN | | Map & Directions |
| The Power Service | 01325 378378 | | Nursery Farm Cottage, Forest Road, Scorton, Richmond, DL10 6ER | | Map & Directions |
| Lacegold Electrical & Mechanical Services Ltd | 01325 315316 | | 1 Aerial House, School Aycliffe, Newton Aycliffe, DL5 6QF | | Map & Directions |
| Auckland Electrical & Security Systems | 01388 458259 | | 29 Barrington Meadows, Bishop Auckland, DL14 6NT | | Map & Directions |
| B A E | 01388 603297 | | 15 Croft Terrace, Coundon, Bishop Auckland, DL14 8PQ | | Map & Directions |
| H R Nelson & Son | 01609 773325 | | 229 High Street, Northallerton, DL7 8LU | | Map & Directions |
| Atkinson & Dawson | 01325 312275 | | Hillmau Lodge, Church Square, High Etherley, Bishop Auckland, DL14 0HW | | Map & Directions |
| F Warren Ltd | 01325 312201 | | Skerne Road, Aycliffe Industrial Park, Newton Aycliffe, DL5 6EP | | Map & Directions |
| P A A Installations Ltd | 01325 247864 | | 41 Jesmond Road , Darlington, DL1 3HN | | Map & Directions |
| Key Electronics | 01388 819525 | | Unit 20, Meadowfield Avenue, Enterprise City, Spennymoor, DL16 6JF | | Map & Directions |
| Abtec Electrical | 0191 377 9835 | | 1 Holyrood Avenue, Darlington, DL3 8AZ | | Map & Directions |
| Impreziv Finishing Ltd | 01325 489899 | | Unit 4, Wards Industrial Estate, Cleveland Street, Darlington, DL1 2UQ | | Map & Directions |
| Young Engineering Services | 01388 718379 | | Morley Grange, Morley, Cockfield, Bishop Auckland, DL13 5BB | | Map & Directions |
| J C Moonie | 01609 775978 | | Moordale, Water End, Brompton, Northallerton, DL6 2RN | | Map & Directions |
| Aycliffe Electrical Services | 01325 311341 | | Unit 8, Hurworth Road, Aycliffe Industrial Park, Newton Aycliffe, DL5 6UD | | Map & Directions |
| J R Teasdale Ltd | 01388 718300 | | 78 Front Street, Cockfield, Bishop Auckland, DL13 5AA | | Map & Directions |
| Tullys Electrical Engineers & Complete Building Services Ltd | 01833 650464 | | Egglesburn, Eggleston, Barnard Castle, DL12 0BD | | Map & Directions |
| Lytestream Ltd | 01325 484045 | | F10-F11 Unit, Morton Park Way, Darlington, DL1 4PQ | | Map & Directions |
| N Y E D | 01609 780637 | | 6 Jervaulx Road, Morton On Swale, Northallerton, DL7 9RA | | Map & Directions |
| Stubbs Electrical Ltd | 01748 822907 | | Fairview, Hudswell, Richmond, DL11 6BW | | Map & Directions |
| T & T Electrics | 01388 710258 | | 2 Liddle Avenue, Butterknowle, Bishop Auckland, DL13 5PN | | Map & Directions |
| Tomlinson & Longstaff Ltd | 01388 833836 | | 9 Chapel Street, West Auckland, Bishop Auckland, DL14 9HP | | Map & Directions |
| Prime Drive & Controls | 0870 077 4633 | | 1 The Row, Hunton, Bedale, DL8 1QG | | Map & Directions |
| Countrywide Jointing Services | 01388 745642 | | 20 Maple Close, Sunnybrow, Crook, DL15 0XQ | | Map & Directions |
| Rh Industrial Electronics | 01388 777823 | | Unit 11d, Dabble Duck Industrial Estate, Shildon, DL4 2RA | | Map & Directions |
| M A Electrical | 01325 353269 | | 35 Mildred Street, Darlington, DL3 6NG | | Map & Directions |
| M G Electrics | 01388 816308 | | 16 North Street, Spennymoor, DL16 6AW | | Map & Directions |
| M Y Electrical Services | 01388 765561 | | Meadowfield, Hill Terrace, Billy Row, Crook, DL15 9SR | | Map & Directions |
| I T S Ltd | 01388 527257 | | The Old Barn Intake Farm, Intake Lane, Frosterley, Bishop Auckland, DL13 2TH | | Map & Directions |
| Chris Humble Electrical | 01325 467744 | | 80 Beaumont Hill, Darlington, DL1 3ND | | Map & Directions |
| Tasker Electrical Installations | 01609 772373 | | Unit 1 Standard Way Industrial Estate, Capital Tires Yard, Northallerton, DL6 2XA | | Map & Directions |
| Macmurray & Burton | 01388 661323 | | 2 Waterside Cottages, Toronto, Bishop Auckland, DL14 7SG | | Map & Directions |
| R Clarke | 01325 460818 | | 15 Throstlenest Avenue, Darlington, DL1 2BH | | Map & Directions |
| Slater Gordon Electrics Ferryhill Ltd | 01740 652893 | | 33 Church Lane , Ferryhill, DL17 8LP | | Map & Directions |
| Lacegold Electrical & Mechanical Services Ltd | 01325 315316 | | 1 Aerial House, School Aycliffe, Newton Aycliffe, DL5 6QF | | Map & Directions |
| A1 Results Ltd | 01677 450665 | | Jervaulx House, Station Road, Newton Le Willows, Bedale, DL8 1TB | | Map & Directions |
| J A Jones | 01388 730452 | | 12 Railway Street, Tow Law, Bishop Auckland, DL13 4DU | | Map & Directions |
| Heron Electrics | 01969 624505 | | Chatsworth, Kaygram, West Witton, Leyburn, DL8 4LZ | | Map & Directions |
|
|
