- George S Hall
- 01407 742408 - Portacabin RAF Valley, Valley, Holyhead, Gwynedd, LL65 3NY
- P.R Plant
- 01407 765749 - 23 Mill Road, Holyhead, Gwynedd, LL65 2TA
- D Shorney
- 01407 740831 - Ewyn Y Don Maes Alaw, Valley, Holyhead, Gwynedd, LL65 3BA
- Taylor & Jones Plumbing & Heating
- 01407 760555 - 13 Rhos Y Gaer Avenue, Holyhead, Gwynedd, LL65 2BE
- J Thomson
- 01407 765191 - Cae Llwyd Porth Y Felin Rd, Porthyfelin, Holyhead, Gwynedd, LL65 1BE
- Worthingtons Plumbing Services
- 07708 616696 - 8 Queens Park Holyhead, Gwynedd, LL65 1PP
- Mon Plumbing
- Avondale, Porthdafarch Rd,, Holyhead, Anglesey, LL65 2LL
- Mon Plumbing
- 01407 765198 - Avondale, Porthdafarch Rd., Holyhead, Anglesey, LL65 2LL
- Steve Heath Plumbing Services
- 01407 742913 - 23 Bryn Trewan, Caergeiliog, Isle Of Anglesey, LL65 3LS
- David Owen and Son
- 07733 370914 - 39 Cambria Street, Holyhead, LL65 1NH
- Gwynedd Plumbing Services
- 07707 641289 - 6 Maes Y Delyn, Holyhead, Anglesey, LL65 2TB
- Anglesey Heating And Plumbing Services Ltd
- 0845 8325004 - 8 Brig Y Nant Llangefni, Anglesey, LL77 7QD
- 11.5 miles from Holyhead
- Monument Gas
- 0845 2632127 - Spion Kop Chapel Street, Penysarn, Gwynedd, LL69 9YE
- 12.7 miles from Holyhead
- W T Plumbing and Heating Services
- 01248 852597 - The Croft Bwlch, Gwynedd, LL74 8RG
- 15.0 miles from Holyhead