| Instaa Gas Ltd, Leeds, LS11 6JU |
| LJB Plumbing and Heating Ltd, West yorkshire, LS11 9QF |
| Safegas UK, Leeds, LS1 7BT |
| A Mentlak T/A Kaltnem Construction, Leeds, LS12 4TQ |
| Aquaheat Plumbing Heating and Gas Services Ltd, Francis House, George Mann Road, Leeds, , LS10 1DJ |
| Churwell Plumbing and Heating, 6 Harwill Croft, Churwell, Morley, Leeds, LS27 7PG |
| ALT Heating Solutions, , LS10 3SY |
| Brite Pipes Plumbing and Heating, Leeds, LS12 1TX |
| MW Plumbing & Heating, Leeds, LS12 6LJ |
| Direct Heating Installations, , LS12 3UF |
| Direct Heating Installations Ltd, Unit 7-8, Gelder Road, Leeds, Yorkshire, LS12 3UF |
| Machins Installations, Leeds, LS9 9JN |
| Safe Gas Fix, Leeds, LS6 1PY |
| RSH Plumbing-Heating, Morley , LS278FB |
| Gascheck Services, , LS27 8LW |
| Oryx Heating Services, Leeds, LS27 9JN |
| MAP property solution , Leeds, LS6 1PB |
| CS Rose Plumbing, 53 Skelton Road, Leeds, West Yorkshire, , LS9 9EP |
| B&G GAS SERVICES, , LS10 4TR |
| Yorkshire Gas Services , Leeds, LS26 0PS |
