| SOLAR HEATING Collectors | ADVECO LTD |
| FAKRO GB LTD |
| HOWARTH TIMBER GROUP |
| ICB (WATERPROOFING) LTD |
| MARLEY LTD |
| OMNIE UNDERFLOOR HEATING |
| STOKVIS ENERGY SYSTEMS |
| UBBINK UK LTD |
| VAILLANT LTD |
| VIESSMANN LTD |
| SOLAR HEATING Control Units | DANFOSS LTD |
| STOKVIS ENERGY SYSTEMS |
| UBBINK UK LTD |
| VAILLANT LTD |
| SOLAR HEATING Drain Back System | VAILLANT LTD |
| SOLAR HEATING Heat Regulators | DANFOSS LTD |
| SOLAR HEATING Hot Water | ADVECO LTD |
| KINGSPAN Hot Water Cylinders |
| STOKVIS ENERGY SYSTEMS |
| VAILLANT LTD |
| VIESSMANN LTD |
| SOLAR HEATING Hot Water Cylinders | ADVECO LTD |
| KINGSPAN Hot Water Cylinders |
| OMNIE UNDERFLOOR HEATING |
| STOKVIS ENERGY SYSTEMS |
| UBBINK UK LTD |
| VAILLANT LTD |
| VIESSMANN LTD |
| ZIP WATER UK |
| SOLAR HEATING Hot Water Heating Systems | ADVECO LTD |
| FAKRO GB LTD |
| KINGSPAN Hot Water Cylinders |
| STOKVIS ENERGY SYSTEMS |
| VAILLANT LTD |
| VIESSMANN LTD |
| SOLAR HEATING Integrated Roof Kits | FAKRO GB LTD |
| KLOBER LTD |
| VIESSMANN LTD |
| SOLAR HEATING Pressurised Systems | VAILLANT LTD |
| SOLAR HEATING Pump Stations | KINGSPAN Hot Water Cylinders |
| UBBINK UK LTD |
| VIESSMANN LTD |
| SOLAR HEATING Systems | KINGSPAN Hot Water Cylinders |
| STOKVIS ENERGY SYSTEMS |
| VAILLANT LTD |
| VIESSMANN LTD |
