- Norrard Electrics
- 01646 692125 - The Docks, Milford Haven, Dyfed, SA73 3AU
- D J Electrics
- 01646 601900 - 6 Scurlock Drive, Neyland, Milford Haven, Dyfed, SA73 1PJ
- D & S Electrical Services
- 0845 3736600 - George Street, Milford Haven, Dyfed, SA73 2AY
- D & S Electrical Services
- 01646 692116 - George Street, Neyland, Milford Haven, Dyfed, SA73 1RR
- Lightning Electrical Construction
- 01646 695657 - Elf Oil Refinery, Milford Haven, Dyfed, SA73 3JD
- Neyland Marine Services
- 01646 698968 - The Docks, Milford Haven, SA73 3AF
- Neyland Marine Services Ltd
- 01646 698968 - The Docks, Milford Haven, Pembrokeshire, SA73 3DJ
- Rite Konnection Electrical Contractors
- 01646 690449 - Unit 1 Havens Head Bsns Pk, Havens Head, Milford Haven, Dyfed, SA73 3QH
- Switch Electrical
- 0870 7565973 - The Gallery Precinct, 25-27 Charles Street, Milford Haven, Dyfed, SA73 2AA
- J A Electrical Contractors
- 01646 697300 - Willowbrook Cottage, Rickeston, Milford Haven, SA73 3TH