| Nomico Electrical Co Ltd | 020 8595 1119 | | 817 Dagenham Road, Dagenham, RM10 7UP |  Map & Directions |
| D J W Electrical Engineering Ltd | 01375 893880 | | Loft Hall, Brentwood Road, Orsett, Grays, RM16 3BD | | Map & Directions |
| Capital Calibration Services Ltd | 01708 386331 | | 23 Colchester Road, The Parade, Romford, RM3 0AQ | | Map & Directions |
| Rbk Services | 01708 222826 | | Unit 13, Warley Street, Upminster Trading Park, Upminster, RM14 3PJ | | Map & Directions |
| Essex Electrical Group Plc | 01708 708888 | | Unit C & D Viking Business Centre, Danes Road, Romford, RM7 0HL | | Map & Directions |
| Murley Electrical Ltd | 01708 722544 | | 5 Lyon Road , Romford, RM1 2BA | | Map & Directions |
| M & E Solutions Ltd | 01708 370668 | | Charles House, Station Road , Harold Wood, Romford, RM3 0BP | | Map & Directions |
| A & B Electrical Services | 01708 709406 | | 124 Bush Elms Road, Hornchurch, RM11 1LT | | Map & Directions |
| Rwt Electrical Ltd | 01708 440805 | | 198 Victoria Road, Romford, RM1 2NX | | Map & Directions |
| Electrical Test Certificates | 020 8507 0541 | | 596A Becontree Avenue , Dagenham, RM8 3HA | | Map & Directions |
| Electrical Services | 01375 379291 | | 2 Farrow Gardens, Grays, RM16 2EU | | Map & Directions |
| J Creed & Sons | 01708 447990 | | 171-189 Hornchurch Road, Hornchurch, RM12 4TE | | Map & Directions |
| D & B Technical Systems Ltd | 01708 788959 | | 21 Oates Road, Romford, RM5 2DX | | Map & Directions |
| Grahame Ford Electrical | 07973 426002 | | 19 Longtown Road, Romford, RM3 7QL | | Map & Directions |
| Taylor Electrical Installations Ltd | 01708 227720 | | 45 Brackendale Gardens, Upminster, RM14 3XA | | Map & Directions |
| Stanern Electrics Ltd | 01708 725865 | | 92 Woodfield Drive, Gidea Park, Romford, RM2 5DH | | Map & Directions |
| K J Evans Electrical Ltd | 01708 470570 | | 29 Spingate Close, Hornchurch, RM12 6SW | | Map & Directions |
| C A Electrical | 01708 442146 | | 23 Grosvenor Drive, Hornchurch, RM11 1PH | | Map & Directions |
| Globe Security | 020 8559 9620 | | 109 Ingrebourne Gardens, Upminster, RM14 1BJ | | Map & Directions |
| Abbacove | 01708 861014 | | 50 Tamar Drive, Aveley, South Ockendon, RM15 4NB | | Map & Directions |
| D M S Electrical Services Ltd | 01708 707177 | | 56 Albany Road, Hornchurch, RM12 4AF | | Map & Directions |
| S M A Electrical & Building Services | 01708 524001 | | 29 Bradwell Close, Hornchurch, RM12 5PR | | Map & Directions |
| Firstford Ltd | 01708 470351 | | King House, Broadway Parade, Hornchurch, RM12 4RS | | Map & Directions |
| Bcs Electrical | 01375 371231 | | Unit 133, Foxton Road, Grays, RM20 4XX | | Map & Directions |
| A C Sewell Ltd | 01375 376970 | | 18 Grangewood Avenue, Grays, RM16 2GH | | Map & Directions |
| Essex Electrical Services Ltd | 01708 869252 | | Unit 3 Thurrock Commercial Centre, Juliet Way, Aveley, South Ockendon, RM15 4YD | | Map & Directions |
| D K Presavation Ltd | 01708 379714 | | 5 Southend Arterial Road, Avenue Industrial Estate, Harold Wood, Romford, RM3 0BY | | Map & Directions |
| 21st Century Electrical | 020 8597 8008 | | Unit 6 Dominion Works, Freshwater Road, Dagenham, RM8 1RX | | Map & Directions |
| D & S Electrical Ltd | 01708 443999 | | 110 Heath Park Road, Heath Park, Romford, RM2 5XL | | Map & Directions |
| C & D Electrics | 01708 449212 | | 24 Maylands Avenue, Hornchurch, RM12 5BE | | Map & Directions |
| Murco Electrical Ltd | 01708 745221 | | Field End, Oak Hill Road, Stapleford Abbotts, Romford, RM4 1EH | | Map & Directions |
| Kengary Electrics | 01708 689666 | | Unit 11, Eastern Avenue, The Glade Business Centre, West Thurrock, Grays, RM20 3FH | | Map & Directions |
| Abacus Contract Services Ltd | 01708 734818 | | Abacus House, 68a North Street, Romford, RM1 1DA | | Map & Directions |
| Electric Connections Ltd | 01708 510776 | | 24 Hailsham Road, Romford, RM3 7SP | | Map & Directions |
| A1 Electrical Installations Ltd | 020 8597 0953 | | 120-122 Becontree Avenue, Dagenham, RM8 2TS | | Map & Directions |
| C J Bartley & Co Ltd | 01708 760606 | | Crowlands, Jutsums Lane, Romford, RM7 0ER | | Map & Directions |
| D A Higgins Electrical Ltd | 01708 891098 | | 712 London Road, Grays, RM20 3JT | | Map & Directions |
| Evans & Shea Ltd | 01708 741055 | | 37 Collier Row Lane, Romford, RM5 3BD | | Map & Directions |
| W F Frost Services Ltd | 01708 377002 | | 49 Station Road , Harold Wood, Romford, RM3 0BS | | Map & Directions |
| Bardon Electrical Services | 01708 445480 | | Brindles, Hornchurch, RM11 2RU | | Map & Directions |
| Harding Bros Electrical Ltd | 020 8597 5694 | | 50 Kenneth Road, Romford, RM6 6LL | | Map & Directions |
| E P C O Building Ltd | 020 8597 1811 | | 7 Back Lane, Romford, RM6 4BP | | Map & Directions |
| Solo Electrical Services Ltd | 01277 211140 | | Folkes Farm, Folkes Lane, Upminster, RM14 1TH | | Map & Directions |
|
|
