| SCREWS | ACS STAINLESS STEEL FIXINGS LTD |
| ANCON BUILDING PRODUCTS |
| BRITISH GYPSUM |
| CORDEN GROUP LTD |
| HELIFIX LTD |
| HILTI (GREAT BRITAIN) LTD |
| HOLLYWATER FITTINGS LTD |
| ITW CONSTRUCTION PRODUCTS LTD |
| LAFARGE PLASTERBOARD LTD |
| SIMPSON STRONG-TIE |
| SOVEREIGN CHEMICALS LTD |
| WALRAVEN LTD |
| SCREWS Carbon Steel | ITW CONSTRUCTION PRODUCTS LTD |
| SCREWS Chipboard | SOVEREIGN CHEMICALS LTD |
| SCREWS Coach | SIMPSON STRONG-TIE |
| SCREWS Concrete | ITW CONSTRUCTION PRODUCTS LTD |
| WALRAVEN LTD |
| SCREWS Double Treaded Shaft | WALRAVEN LTD |
| SCREWS Drywall | BRITISH GYPSUM |
| HILTI (GREAT BRITAIN) LTD |
| ITW CONSTRUCTION PRODUCTS LTD |
| KNAUF DRYWALL |
| LAFARGE PLASTERBOARD LTD |
| SOVEREIGN CHEMICALS LTD |
| SCREWS Framing | ITW CONSTRUCTION PRODUCTS LTD |
| SOVEREIGN CHEMICALS LTD |
| SCREWS Hammer-In | HELIFIX LTD |
| ITW CONSTRUCTION PRODUCTS LTD |
| SOVEREIGN CHEMICALS LTD |
| WALRAVEN LTD |
| SCREWS Masonry | ITW CONSTRUCTION PRODUCTS LTD |
| SOVEREIGN CHEMICALS LTD |
| SCREWS Pan Head | HILTI (GREAT BRITAIN) LTD |
| SCREWS Self Drilling | ACS STAINLESS STEEL FIXINGS LTD |
| ANCON BUILDING PRODUCTS |
| ASH & LACY BUILDING SYSTEMS |
| BRITISH GYPSUM |
| HILTI (GREAT BRITAIN) LTD |
| HOLLYWATER FITTINGS LTD |
| ITW CONSTRUCTION PRODUCTS LTD |
| SCREWS Stainless Steel | ACS STAINLESS STEEL FIXINGS LTD |
| ANCON BUILDING PRODUCTS |
| ASH & LACY BUILDING SYSTEMS |
| SCREWS Timber Decking | ITW CONSTRUCTION PRODUCTS LTD |
| SOVEREIGN CHEMICALS LTD |
| SCREWS Wafer Head | BRITISH GYPSUM |
| SCREWS Wing Tip | HILTI (GREAT BRITAIN) LTD |
