| CILLS | AGGREGATE INDUSTRIES - BLOCKS |
| AGGREGATE INDUSTRIES - STRUCTURAL PRODUCTS |
| ALUMASC WATER MANAGEMENT SOLUTIONS |
| BINGLEY STONE |
| CONTOUR HEATING PRODUCTS LTD |
| CRITTALL WINDOWS LTD |
| DANI ALU UK LTD |
| EUROCELL PLC |
| FORTICRETE WALLING & CAST STONE |
| HOWARTH TIMBER GROUP |
| PROCTER CAST STONE |
| PROTEKTOR GROUP UK LTD |
| ROBESLEE CONCRETE CO LTD |
| SUPREME CONCRETE LTD |
| WELSH SLATE |
| CILLS Aluminium | ALUMASC WATER MANAGEMENT SOLUTIONS |
| CONTOUR HEATING PRODUCTS LTD |
| DANI ALU UK LTD |
| FUSION FACADES LTD |
| ICB (WATERPROOFING) LTD |
| PROTEKTOR GROUP UK LTD |
| CILLS Cast Stone (Reconstructed Stone) | AGGREGATE INDUSTRIES - BLOCKS |
| AGGREGATE INDUSTRIES - STRUCTURAL PRODUCTS |
| FORTICRETE MASONRY PRODUCTS |
| FORTICRETE WALLING & CAST STONE |
| PROCTER CAST STONE |
| CILLS Limestone | PORTLAND STONE FIRMS LTD |
| CILLS Metal | CONTOUR HEATING PRODUCTS LTD |
| CRITTALL WINDOWS LTD |
| FUSION FACADES LTD |
| CILLS Natural Stone | BINGLEY STONE |
| PORTLAND STONE FIRMS LTD |
| CILLS Portland Stone | PORTLAND STONE FIRMS LTD |
| CILLS Precast Concrete | AGGREGATE INDUSTRIES UK LTD |
| ROBESLEE CONCRETE CO LTD |
| SUPREME CONCRETE LTD |
| CILLS PVC-u | EUROCELL PLC |
| CILLS Sandstone | BINGLEY STONE |
| CILLS Slate | WELSH SLATE |
| CILLS Steel Galvanised | CRITTALL WINDOWS LTD |
| CILLS York Stone | BINGLEY STONE |
