| D M E Engineers Ltd | 01269 870967 | | 1 Bryn Tirion, Pontyberem, Llanelli, SA15 5BX |  Map & Directions |
| Pat Test Wales | 01554 770575 | | 19 Langland Road, Llanelli, SA15 1BR | | Map & Directions |
| D M G Systems Ltd | 01792 892107 | | 5 Clos Ty Mawr, Penllergaer, Swansea, SA4 9DA | | Map & Directions |
| Dyfed Electronics Ltd | 01646 697773 | | Cleddau House , Milford Haven, SA73 3LA | | Map & Directions |
| Martin Rees Electrical Contractors Ltd | 01550 721198 | | Brewery Field, Victoria Crescent, Llandovery, SA20 0YE | | Map & Directions |
| E P P Electrics | 01554 890378 | | 23 Causeway Street, Kidwelly, SA17 4SU | | Map & Directions |
| M Dardecker | 01792 874954 | | 39 Woodlands, Gowerton, Swansea, SA4 3DP | | Map & Directions |
| Electrical Mechanical Services Ltd | 01792 894599 | | 1 Sunningdale Drive, Gorseinon, Swansea, SA4 4LZ | | Map & Directions |
| N Waters & Sons Ltd | 01269 843714 | | Unit 12, Capel Hendre Industrial Estate, Ammanford, SA18 3SJ | | Map & Directions |
| Alpha Electrics | 01792 798032 | | 62 Carmel Road, Winch Wen, Swansea, SA1 7JZ | | Map & Directions |
| Rhino Engineering Ltd | 01639 888119 | | 2 Cramic Way, Port Talbot, SA13 1RU | | Map & Directions |
| G J L Electrical Services Ltd | 01792 844031 | | Ashling, Lon Eithrym, Clydach, Swansea, SA6 5ER | | Map & Directions |
| Sheldon Humphreys | 01348 840023 | | 88 St. Davids Road, Letterston, Haverfordwest, SA62 5SJ | | Map & Directions |
| Safe Electrical | 01834 814944 | | Glenpines, Rushylake, Saundersfoot, SA69 9NY | | Map & Directions |
| Cell Lec | 01792 588902 | | 533 Middle Road, Gendros, Swansea, SA5 8EG | | Map & Directions |
| Michael Sleep | 01639 720166 | | 118 High Street, Glynneath, Neath, SA11 5AL | | Map & Directions |
| Gavin Electrical Engineering | 01792 891919 | | Phoenix Way, Garngoch Industrial Estate, Gorseinon, Swansea, SA4 9WF | | Map & Directions |
| Doug Mclennan | 01639 843070 | | Pantyfedwen, Heol Giedd, Ystradgynlais, Swansea, SA9 1LQ | | Map & Directions |
| Phil Owen | 01437 764040 | | Withybush Lodge, Withybush Road, Haverfordwest, SA62 4BW | | Map & Directions |
| Betalec Ltd | 01792 324555 | | Unit 29, Neath Abbey Business Park, Neath Abbey, Neath, SA10 7DR | | Map & Directions |
| F A Wilkins | 01792 898736 | | 33 Swansea Road, Penllergaer, Swansea, SA4 9AQ | | Map & Directions |
| Cothi Engineering Ltd | 01558 650380 | | Erwion, Ffaldybrenin, Ffarmers, Llanwrda, SA19 8QG | | Map & Directions |
| Rons Electrical Services | 01570 423281 | | Esgaireiddig, Cwmann, Lampeter, SA48 8EU | | Map & Directions |
| Amico Electrical Services | 01792 899154 | | Unit 2, Llwyn Y Graig, Garngoch Industrial Estate, Gorseinon, Swansea, SA4 9WG | | Map & Directions |
| Bill Owens | 01994 448429 | | Maes Y Werin, Llanboidy, Whitland, SA34 0EL | | Map & Directions |
| Honeywell Control Systems Ltd | 01437 766761 | | Unit 1, Haverfordwest Business Centre, Merlins Court , Winch Lane , Haverfordwest, SA61 1SB | | Map & Directions |
| T W Lewis | 01792 799773 | | 15 New Quarr Road, Treboeth, Swansea, SA5 9DH | | Map & Directions |
| Sherman Electrical Ltd | 01437 710810 | | Deerlands, Camrose, Haverfordwest, SA62 6HN | | Map & Directions |
| Eastside Electrical | 01792 459281 | | 17 Beaumont Crescent, St. Thomas, Swansea, SA1 8DW | | Map & Directions |
| Newnant Electrical | 01239 698266 | | Newnant, Trelech, Carmarthen, SA33 6SF | | Map & Directions |
| J W & E Morris & Son Ltd | 01639 883875 | | Margam, Port Talbot, SA13 2NG | | Map & Directions |
| Electratest | 01834 861389 | | Parc Yr Odyn, Kiln Park Road, Narberth, SA67 8TX | | Map & Directions |
| Richard Butler | 01239 698655 | | Llys Y Llwynog, Tegryn, Llanfyrnach, SA35 0BL | | Map & Directions |
| A1 Electrics Ltd | 01554 832820 | | 103 Dolau Fan Road, Burry Port, SA16 0RP | | Map & Directions |
| Barrack & Rees | 01437 765637 | | Eynhallow, Park Corner Road, Haverfordwest, SA61 2XA | | Map & Directions |
| Bob Fowler | 01437 890541 | | 48 Lower Quay Road , Hook, Haverfordwest, SA62 4LR | | Map & Directions |
| Richard Dewarrenne | 01559 370772 | | Ogof, Dre-Fach Felindre, Llandysul, SA44 5HR | | Map & Directions |
| North Gower Electrical Services | 01792 850696 | | Ty Gwyn, Llanmorlais, Swansea, SA4 3RY | | Map & Directions |
| Daubney Services | 01437 779663 | | 11 Delapoer Drive , Haverfordwest, SA61 1HX | | Map & Directions |
| D E Phillips & Sons | 01994 419361 | | Tanybryn, Glandwr, Whitland, SA34 0UA | | Map & Directions |
| P J Gavin | 01792 874955 | | 97 Cecil Road, Gowerton, Swansea, SA4 3DN | | Map & Directions |
| Martin Williams | 01570 471090 | | Penlon Cottage, Abermeurig, Lampeter, SA48 8PN | | Map & Directions |
| V R Hoare & Sons Ltd | 01437 764156 | | 58 Pembroke Road , Haverfordwest, SA61 1JT | | Map & Directions |
| Projectworld Ltd | 01639 812332 | | Morvern Works, Church Street, Briton Ferry, Neath, SA11 2JP | | Map & Directions |
| Phillips Services Ltd | 01792 653794 | | David Street, Cwmbwrla, Swansea, SA5 8NX | | Map & Directions |
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