| ARCHITECTURAL MASONRY | AGGREGATE INDUSTRIES - BLOCKS |
| AGGREGATE INDUSTRIES - COMMERCIAL LANDSCAPING |
| BINGLEY STONE |
| FORTICRETE MASONRY PRODUCTS |
| LIGNACITE LTD |
| PORTLAND STONE FIRMS LTD |
| ARCHITECTURAL MASONRY Blocks | BINGLEY STONE |
| FORTICRETE MASONRY PRODUCTS |
| HOLCIM AGGREGATES UK |
| IBSTOCK BRICK LTD |
| LIGNACITE LTD |
| PORTLAND STONE FIRMS LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| ARCHITECTURAL MASONRY BS EN 771-3:2003 | FORTICRETE MASONRY PRODUCTS |
| HOLCIM AGGREGATES UK |
| LIGNACITE LTD |
| ARCHITECTURAL MASONRY Cast Stone (Reconstructed Stone) | AGGREGATE INDUSTRIES - BLOCKS |
| AGGREGATE INDUSTRIES - STRUCTURAL PRODUCTS |
| FORTICRETE MASONRY PRODUCTS |
| FORTICRETE WALLING & CAST STONE |
| LIGNACITE LTD |
| PROCTER CAST STONE |
| ARCHITECTURAL MASONRY Facing Blocks | PORTLAND STONE FIRMS LTD |
| ARCHITECTURAL MASONRY Non-Standard Units | AGGREGATE INDUSTRIES - BLOCKS |
| AGGREGATE INDUSTRIES - COMMERCIAL LANDSCAPING |
| BINGLEY STONE |
| FORTICRETE MASONRY PRODUCTS |
| PORTLAND STONE FIRMS LTD |
| ARCHITECTURAL MASONRY Recycled Aggregate | AGGREGATE INDUSTRIES - BLOCKS |
| AGGREGATE INDUSTRIES - STRUCTURAL PRODUCTS |
| HOLCIM AGGREGATES UK |
| ARCHITECTURAL MASONRY Restoration Treatment | TENSID UK LTD |
| ARCHITECTURAL MASONRY Stack-Bonded Appearance | FORTICRETE MASONRY PRODUCTS |
| ARCHITECTURAL MASONRY Stone Standardised Components | AGGREGATE INDUSTRIES - BLOCKS |
| AGGREGATE INDUSTRIES - COMMERCIAL LANDSCAPING |
| BINGLEY STONE |
| PORTLAND STONE FIRMS LTD |
