| Concrete Tile Manufacturers' Association | |
| Forticrete Ltd | www.forticrete.co.uk | Marley Eternit Ltd | www.marleyeternit.co.uk |
| Lafarge Roofing Ltd | www.lafarge-roofing.co.uk |
| Cemex Ltd | www.cemex.co.uk |
| Sandtoft Roof Tiles Ltd | www.sandtoft.co.uk |
| Clay Roof Tile Council | |
| Dreadnought Clay Roof Tiles | www.dreadnought-tiles.co.uk | Marley Eternit Ltd | www.marleyeternit.co.uk |
| Keymer Handmade Tiles | www.keymer.co.uk |
| Lafarge Roofing Ltd | www.lafarge-roofing.co.uk |
| Sandtoft Roof Tiles Ltd | www.sandtoft.co.uk |
| Fibre Cement Manufacturers' Association | |
| Marley Eternit Ltd | www.marleyeternit.co.uk |
| Underlay and Ventilation Product Manufacturers | |
| Brett Martin Harcon Ltd | www.brettmartin.com/roofing | Glidevale Ltd | www.glidevale.com |
| Ubbink | www.ubbink.co.uk |
| Hambleside Danelaw (Roofing & Ventilation) Ltd | www.hambleside-danelaw.co.uk |
| Manthorpe Building Products | www.manthorpe.co.uk |
| National Federation of Roofing Contractors | www.nfrc.co.uk |
