| ROOFING | A.PROCTOR GROUP LTD |
| APERAM |
| FILON PRODUCTS LTD |
| FORTICRETE ROOFING PRODUCTS LTD |
| KLOBER LTD |
| MARLEY LTD |
| MATTHEW HEBDEN |
| RADMAT BUILDING PRODUCTS LTD |
| SOPREMA UK |
| TATA STEEL |
| VMZINC UK |
| ROOFING Felt | AAC WATERPROOFING LTD |
| CAVITY TRAYS LTD |
| KLOBER LTD |
| TIMLOC BUILDING PRODUCTS |
| ROOFING Felts: | A.PROCTOR GROUP LTD |
| DELTA MEMBRANE SYSTEMS LTD |
| HOWARTH TIMBER GROUP |
| KLOBER LTD |
| UBBINK UK LTD |
| ROOFING Fibreglass | FILON PRODUCTS LTD |
| ROOFING Slate | WELSH SLATE |
| ROOFING Stainless Steel | APERAM |
| ROOFING Surface Treatments | DELTA MEMBRANE SYSTEMS LTD |
| GLIXTONE LTD |
| SOPREMA UK |
