| Halo Heating, Derbyshire, DE55 7HR |
| Premier Plumb, Alfreton, DE557EA |
| Mountain Heating & Home Services, Alfreton, DE55 2HR |
| Mountain Heating & Home Services, , De55 5ts |
| Gaspro, Alfreton, DE55 2GD |
| Derbyshire Central Heating Services, Pinxton, NG16 6JN |
| Act-Fast Plumbing, Nottingham, DE55 4AY |
| Heat Serve, Matlock, DE55 1AH |
| Phil Cotterill, Alfreton, DE55 5LS |
| Pronto Plumbing & Gas , sutton in Ashfield, NG17 2NR |
| SJB Plumbing Service, Alfreton, DE55 5NJ |
| Ripley Plumbing Services , Ripley, DE5 3NG |
| Gary Smallwood Plumbing & Heating, Sutton-in-ashfield, NG17 1HQ |
| Jack Rounding Plumbing & Heating, Ripley, DE5 9RQ |
| Heatgain gas services , Huthwaite , NG17 2SY |
| DM Plumbing & Heating, Nottingham, NG16 5BT |
| BJP Building Contractors, Mansfield, Ng179ez |
| Gus4gas Ltd, Chesterfield, S45 8AW |
| JMS Heating Ltd, Matlock, DE4 5DX |
| Aspire Eco Energy Ltd, Chesterfield, S45 9JW |
