| A J Brown | 01766 810881 | | Pont Y Felin, Glan Y Wern Terrace, Chwilog, Pwllheli, LL53 6SN |  Map & Directions |
| D L Evans | 01244 570692 | | Laurel Cottage, Burton Green, Rossett, Wrexham, LL12 0AW | | Map & Directions |
| Dob Electrical Ltd | 01248 600679 | | 3 High Street, Ogwen Terrace, Bethesda, Bangor, LL57 3AY | | Map & Directions |
| Menai Electrical Ltd | 01248 353855 | | Station Buildings, Treborth, Bangor, LL57 2NX | | Map & Directions |
| Owen & Palmer Ltd | 01248 353515 | | Unit 12, Llandygai Industrial Estate, Llandygai, Bangor, LL57 4YH | | Map & Directions |
| Ges Controls Ltd | 01248 601005 | | Unit 8, Felin Fawr Industrial Estate, Bethesda, Bangor, LL57 4YY | | Map & Directions |
| Electrotest | 01248 715576 | | 4 Carreg y Gad Estate , Ffordd Penmynydd, Llanfairpwllgwyngyll, LL61 5QF | | Map & Directions |
| Celec Ltd | 01691 774444 | | White House/black Park, Halton, Chirk, Wrexham, LL14 5BD | | Map & Directions |
| C M W Controls Ltd | 01978 661516 | | Bryn Lane, Wrexham Industrial Estate, Wrexham, LL13 9UT | | Map & Directions |
| Malcolm Electrics | 01341 247597 | | Ty Gwyn, Ffordd Glan Mor, Talybont, LL43 2AR | | Map & Directions |
| Henry Williams | 01492 572666 | | Unit 15, Ffordd Sam Pari, Morfa Conwy Business Park, Conwy, LL32 8HH | | Map & Directions |
| Jones Electrics Ltd | 01978 350279 | | 3 Churchlea, Rhosrobin, Wrexham, LL11 4RB | | Map & Directions |
| Colin Edwards | 01978 820957 | | Pendil, Llangollen Road, Acrefair, Wrexham, LL14 3RP | | Map & Directions |
| Elsteel Uk | 01978 855909 | | Davy Way, Llay Industrial Estate , Llay, Wrexham, LL12 0PG | | Map & Directions |
| H Edwards | 01407 720678 | | Rhos Yr Wyn, Bryngwran, Holyhead, LL65 3RG | | Map & Directions |
| N M Archer | 01978 710722 | | Electricity House, Station Road, Overton, Wrexham, LL13 0EF | | Map & Directions |
| J W Jones & Son | 01492 531414 | | 3-5 Bay View Road, Colwyn Bay, LL29 8DW | | Map & Directions |
| Cybi Electrical Contracting | 01407 762244 | | Cybi Buildings, St. Cybi Street, Holyhead, LL65 1DS | | Map & Directions |
| Peter Scott | 01766 831314 | | 12 Bowydd Street, Blaenau Ffestiniog, LL41 3HL | | Map & Directions |
| Davies Bros | 01978 761296 | | Woodside, Wrexham Road, Cefn-Y-Bedd, Wrexham, LL12 9UW | | Map & Directions |
| Lloyd Morris Electrical Ltd | 01978 291505 | | Ty Gwyn Lane, Wrexham, LL11 2UA | | Map & Directions |
| E Tobijanski | 01978 852298 | | Chain House , Chapel Lane , Llay, Wrexham, LL12 0PA | | Map & Directions |
| D Parry & Son | 01492 516013 | | 14 West Road, Old Colwyn, Colwyn Bay, LL29 9DU | | Map & Directions |
| G T N Electrical Security Services | 01978 754884 | | Smithy House, Southsea Road, Southsea, Wrexham, LL11 6PP | | Map & Directions |
| Williams Engineering | 01341 422247 | | Unit 4, Marian Mawr Industrial Estate, Dolgellau, LL40 1UU | | Map & Directions |
| Don Hughes | 01978 757121 | | Fron Hedd, Penygelli Road, Coedpoeth, Wrexham, LL11 3RW | | Map & Directions |
| I Ashcroft | 01978 757989 | | 32 Bryn Hyfryd, Coedpoeth, Wrexham, LL11 3YB | | Map & Directions |
| H R S Electrical | 01248 716701 | | 22 Ffordd Rhiannon, Llanfairpwllgwyngyll, LL61 5QB | | Map & Directions |
| B & E Electrical | 01766 514973 | | Y Ffridd, Morfa Bychan, Porthmadog, LL49 9YR | | Map & Directions |
| C Griffith | 01248 601173 | | 12 Garneddwen, Bethesda, Bangor, LL57 3PD | | Map & Directions |
| W S Calder | 01492 518160 | | 8 Garth Road, Old Colwyn, Colwyn Bay, LL29 8AF | | Map & Directions |
| Kennedy Electrical Ltd | 01248 713165 | | Tall Trees, Lon Ganol, Llandegfan, Menai Bridge, LL59 5TL | | Map & Directions |
| Dyffryn Electricals | 01492 641363 | | 12 Y Berllan, Llanrwst, LL26 0HR | | Map & Directions |
| N W Edwards | 01978 757652 | | Springcroft, Waen Road, Coedpoeth, Wrexham, LL11 3PP | | Map & Directions |
| E P Furber | 01248 712056 | | Cartref, Druid Road , Menai Bridge, LL59 5BY | | Map & Directions |
| Lloyd Morris Electrical Ltd | 01407 832202 | | Unit 3, Amlwch Industrial Estate, Amlwch, LL68 9BX | | Map & Directions |
| Fred Weston | 01745 350123 | | Rear Of, 18-20 Elwy Street, Rhyl, LL18 1BP | | Map & Directions |
| D E Jones Electrical Solutions Ltd | 01490 412339 | | 3 Ffridd Y Gog, Corwen, LL21 9YE | | Map & Directions |
| M E Owen | 01492 581904 | | 15 Maelgwyn Drive , Deganwy, Conwy, LL31 9UY | | Map & Directions |
| David Bird | 01286 676727 | | Cae Garw, Llanberis Road, Caernarfon, LL55 2DF | | Map & Directions |
|
|
