| Jhw developments ltd, Scunthorpe , DN15 8QZ |
| Hales & Coultas Heating & Plumbing, Ongo House, 26-30 High Street, Scunthorp, DN15 6NL |
| Safe Gas Installations Plumbing and Heating, , DN15 7HG |
| Plumbdoctor Ltd, Scunthorpe, DN16 1LJ |
| Bespoke Renovations , Scunthorpe, DN158BQ |
| D R Plumbing & Heating, Scunthorpe, DN16 2BG |
| S & B Property Maintenance, Scunthorpe, DN17 2HH |
| B.B Plumbing & Heating, Scunthorpe, DN17 2GJ |
| Ashby Gas services, , DN17 3LN |
| High & Dry Renovations Ltd, Brigg, DN20 8PD |
| P Threadgould Plumbing and Heating Engineer, Donaster, DN9 1AQ |
| A & S Combined Gas Services Ltd, , HU15 1AQ |
| T.W Plumbing & Heating, , HU15 1LA |
| JKN Renewables Ltd, Doncaster, DN9 1JL |
| David Pearce Plumbing and Heating, Epworth, DN9 1DW |
| J Broadhead Plumbing, Barton-upon-Humber, DN18 |
| Robert I Foreman, Doncaster, DN9 1RE |
| Smart Gas Ltd, Hessle, Hull, HU13 0DP |
| CSD Plumbing & Heating Ltd, Hull, HU13 0AT |
| Trevor Barlow, Doncaster, DN85HL |
