| STRUCTURAL FRAMES . | FORTERRA BUILDING PRODUCTS LIMITED |
| KAWNEER UK LTD |
| PRECAST CONCRETE STRUCTURES LTD |
| SCHUECO UK LTD |
| TATA STEEL |
| STRUCTURAL FRAMES Aluminium | KAWNEER UK LTD |
| SCHUECO UK LTD |
| TECHNAL LTD |
| STRUCTURAL FRAMES External Wall Insulation Systems (EWI Systems) | KNAUF UK |
| STRUCTURAL FRAMES Modular Units | KAWNEER UK LTD |
| SCHUECO UK LTD |
| STRUCTURAL FRAMES Multi Storey | FORTERRA BUILDING PRODUCTS LIMITED |
| KAWNEER UK LTD |
| PRECAST CONCRETE STRUCTURES LTD |
| SCHUECO UK LTD |
| TATA STEEL |
| STRUCTURAL FRAMES OSM (Offsite Manufacture) | KNAUF UK |
| PRECAST CONCRETE STRUCTURES LTD |
| WERNICK GROUP |
| STRUCTURAL FRAMES Precast Concrete | AGGREGATE INDUSTRIES UK LTD |
| PRECAST CONCRETE STRUCTURES LTD |
| STRUCTURAL FRAMES Steel | KNAUF UK |
| SCHUECO UK LTD |
| TATA STEEL |
| STRUCTURAL FRAMES Steel Lightweight | SCHUECO UK LTD |
| TATA STEEL |
| STRUCTURAL FRAMES Steel Multistorey | TATA STEEL |
