| Luke Woolnough, Newark, NG24 1RE |
| derry building services, newark, NG24 1JP |
| Pro-Heat Plumbing & Heating Limited, Nottinghamshire, NG24 2EG |
| Glynn Brown Gas Service and Installation, , NG24 3QU |
| David Mann Plumbing and Heating Ltd, Newark, NG24 4QL |
| Heat Haus Newark Limited, , NG23 7RS |
| M J Fryer Plumbing & Heating, Newark, NG23 5EH |
| Microgen For Home, Grantham, NG32 2AX |
| The New Boiler Company Limited, Nottingham, NG14 7HH |
| Newtec Plumbing & Heating Ltd, Newark, NG22 8LJ |
| Rob Brown Plumbers, Newark, NG22 8SF |
| IO Plumbing & Heating, Lincoln, LN6 9PH |
| BoilerInstallation Lincoln , 24 Claudius Road, North Hykeham, Lincoln, LN6 9PH |
| Steven Daw, Nottingham, NG12 1EE |
| Clear Blue Gas Ltd, Nottinghamshire, NG22 0JY |
| Valley Breeze, Newark, NG23 7EW |
| HCG Heating Construction Ltd, , LN6 9AP |
| System Servicing, Lincoln, LN6 8TU |
| VJB Gas Tech Services, , NG31 8AS |
| TDR Gas Heating & Plumbing, Nottingham, NG14 6PU |
