- Calor Gas (Calor Gas Direct)
- 01248 450719 - 2d Glanydon Industrial Estate, Pwllheli, Gwynedd, LL53 5YT
- T.J Fixit
- 0870 8148359 - Eisteddfa, North Road, Caernarfon, Gwynedd, LL55 1BE
- Flamerite
- 01492 573355 - Unit 7/8 Llandudno Jcn Indust Est, Llandudno Junction, Gwynedd, LL31 9SX
- Gas Services Direct
- 01492 592473 - 1 Deganwy Road, Deganwy, Conwy, Gwynedd, LL31 9DH
- Industrial Gas Services
- 01244 813426 - Bumble Bee Gar Church St, Connah's Quay, Deeside, Clwyd, CH5 4AR
- David F Jones
- 01492 580774 - Brynawel Craig, Graig, Glan Conwy, Colwyn Bay, Clwyd, LL28 5TW
- S.A Maybury
- 0845 3736600 - 12 Delamere Avenue, Buckley, Clwyd, CH7 3BU
- Morton Services
- 01758 612800 - 2d Glanydon Industrial Estate, Pwllheli, Gwynedd, LL53 5YT
- Power Services, The
- 01286 676727 - Caegarw Llanberis Rd, Caernarfon, Gwynedd, LL55 2DF
- Colwyn Fireplace Centre Ltd
- 01492 540033 - Bron Y Nant, Colwyn Bay, Clwyd, LL28 4YL
- G P Davies Gas Services
- 0845 8061664 - 94a Brunswick Road Buckley, Clwyd, Flintshire, CH7 2ER
- Border Gas NW Ltd
- 01978 855252 - 20 Mayflower Drive Marford, WREXHAM, LL12 8LD
- Chalco Wayne Challoner
- 01978 752038 - 11, Ash Close, Summerhill, Wrexham, Wrexham, LL11 4HR