| Adams Electrical Services Ltd | 01642 786565 | | Hillcot, Thirsk Road, Kirklevington, Yarm, TS15 9LR |  Map & Directions |
| Associated Power Services Ltd | 01454 315281 | | Station Road, Unit 10, Stokesley, Middlesbrough, TS9 7AB | | Map & Directions |
| T Lewis | 01642 532732 | | 24 Imperial Avenue, Norton, Stockton On Tees, TS20 2EW | | Map & Directions |
| Wares Teesside Ltd | 01642 358040 | | Glf House, Wellington Court, Preston Farm Business Park, Stockton On Tees, TS18 3TA | | Map & Directions |
| Brite Spark | 01642 558554 | | 39 Norton Avenue, Stockton On Tees, TS20 2JJ | | Map & Directions |
| 24 Hr Quick Response Electrics | 07875 134704 | | 30 Princes Road, Middlesbrough, TS1 4BB | | Map & Directions |
| Wiring Services Ltd | 01642 462357 | | W S House, Stapylton Street, Middlesbrough, TS6 7BH | | Map & Directions |
| Maval Ltd | 01642 455101 | | Skippers Lane, Skippers Lane Industrial Estate, Middlesbrough, TS6 6HA | | Map & Directions |
| A A G Electrical | 01642 702220 | | 17a Bishopton Lane, Stockton On Tees, TS18 1PS | | Map & Directions |
| Alstom Power Conversion Ltd | 01642 254280 | | 4a Brighouse Road, Brighouse Business Village, Middlesbrough, TS2 1RT | | Map & Directions |
| C & M Electrical Ltd | 01642 440640 | | 2f Vaughan Court, Stapylton Street, Middlesbrough, TS6 7BJ | | Map & Directions |
| Stuart Wilson Electrical Ltd | 01642 675757 | | 43 Norton Road, Stockton On Tees, TS18 2BU | | Map & Directions |
| Dualbound Ltd | 01642 606262 | | 1 Diamond Court, Douglas Close, Preston Farm Industrial Estate, Stockton On Tees, TS18 3SB | | Map & Directions |
| Marton Electrical Ltd | 01642 222925 | | 16c Queensway Court, Queensway, Middlesbrough, TS3 8TG | | Map & Directions |
| Graymar Instruments Ltd | 01642 310274 | | 45 Gypsy Lane, Nunthorpe, Middlesbrough, TS7 0DU | | Map & Directions |
| Pass Ltd | 0870 143 1860 | | Hunters Buildings, 1 Bowesfield Lane, Stockton On Tees, TS18 3QZ | | Map & Directions |
| 4c Electronics | 01642 616449 | | 2 Diamond Court, Douglas Close, Preston Farm Industrial Estate, Stockton On Tees, TS18 3SB | | Map & Directions |
| Charles Webster | 01287 640227 | | Sheralee, Whitby Road, Easington, Saltburn By The Sea, TS13 4NW | | Map & Directions |
| Bonson Electrics | 01642 555444 | | 46 Gainsborough Crescent, Billingham, TS23 3GA | | Map & Directions |
| A C Electrical Services | 01642 559914 | | 15 Imperial Avenue, Norton, Stockton On Tees, TS20 2EW | | Map & Directions |
| Tees Testing Ltd | 01439 798448 | | Grange Cottage, Chop Gate, Middlesbrough, TS9 7LB | | Map & Directions |
| Quartz Ltd | 01642 244411 | | 2 River Court, Brighouse Road, Brighouse Business Village, Riverside Park, Middlesbrough, TS2 1RT | | Map & Directions |
| L J J Ltd | 01642 617517 | | Shackleton House, Falcon Court, Preston Farm Industrial Estate, Stockton On Tees, TS18 3TS | | Map & Directions |
| A & N Electrical Services | 01642 812586 | | 9 Glaisdale Avenue, Middlesbrough, TS5 7PG | | Map & Directions |
| British Electrical Engineering Services | 01642 469918 | | 100 Normanby Road, Middlesbrough, TS6 6SA | | Map & Directions |
| Eiwhs | 01642 769085 | | 21 Allensway, Thornaby, Stockton On Tees, TS17 9HA | | Map & Directions |
| Map Electrics Ltd | 01642 884005 | | Unit 24, Ross Road, Stockton On Tees, TS18 2NH | | Map & Directions |
| Balfour Beatty Power Networks Ltd | 01642 468431 | | Sotherby Road, South Bank, Middlesbrough, TS6 6LP | | Map & Directions |
| Catchpole Wallace Associates | 01642 363723 | | 134 Whitehouse Road, Billingham, TS22 5BQ | | Map & Directions |
| Powerstream Electrical & Building Services Ltd | 01429 277053 | | Burbank Street, Hartlepool, TS24 7JW | | Map & Directions |
| Intelect Ltd | 01642 878784 | | 6 Whorlton Road, Middlesbrough, TS2 1QJ | | Map & Directions |
| Albion Electrical | 01429 869022 | | 14 Albion Terrace, The Headland, Hartlepool, TS24 0QL | | Map & Directions |
| North East Electrical | 01642 297979 | | 23 South Park Avenue, Middlesbrough, TS6 0NS | | Map & Directions |
| P Laverick | 01642 557946 | | 12 Mark Avenue, Norton, Stockton On Tees, TS20 1NG | | Map & Directions |
| Instrumentation Electrical Services Ltd | 01642 714688 | | 2a High Street, Stokesley, Middlesbrough, TS9 5DQ | | Map & Directions |
| British Electrical Engineering Services | 01429 881264 | | Front Street South, Trimdon, Trimdon Station, TS29 6LZ | | Map & Directions |
| Cockburn Ltd | 01642 491632 | | 74 High Street, Marske-By-The-Sea, Redcar, TS11 7BE | | Map & Directions |
| Dimewest Ltd | 01642 805088 | | 60 Lord Avenue, Thornaby, Stockton On Tees, TS17 9JX | | Map & Directions |
| A G Electrical Services Ltd | 01642 805300 | | 59 Ayresome Street, Middlesbrough, TS1 4NR | | Map & Directions |
| F V Condell | 01287 640450 | | 34 West Road, Loftus, Saltburn By The Sea, TS13 4RQ | | Map & Directions |
| Matrix Power Ltd | 01642 210210 | | 2 Brighouse Road, Brighouse Business Village, Middlesbrough, TS2 1RT | | Map & Directions |
| Technical Combined Solutions Ltd | 01642 220342 | | 2r High Force Road, Riverside Park Industrial Estate, Middlesbrough, TS2 1RH | | Map & Directions |
| C B L Cable Contractors Ltd | 01429 867474 | | Unit 5, Usworth Road, Hartlepool, TS25 1PD | | Map & Directions |
| Norman L Mickle | 01642 765959 | | 17 Hidcote Gardens, Ingleby Barwick, Stockton On Tees, TS17 0XU | | Map & Directions |
| Dawson Electrics | 01642 310487 | | 50 Woodley Grove, Ormesby, Middlesbrough, TS7 9HY | | Map & Directions |
| Allinson Electrical | 01642 850485 | | 121 Acklam Road, Middlesbrough, TS5 5HR | | Map & Directions |
| P Laverick | 01642 353522 | | Concorde House, Concorde Way, Preston Farm Industrial Estate, Stockton On Tees, TS18 3RB | | Map & Directions |
| Guisborough Electrical | 01287 638965 | | 20 St. Leonards Road, Guisborough, TS14 8BS | | Map & Directions |
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