| COURSING BRICKS Concrete | FORTERRA BUILDING PRODUCTS LIMITED |
| FORTICRETE MASONRY PRODUCTS |
| H+H UK LTD |
| LIGNACITE LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| COURSING BRICKS Concrete Coursing Common Units / Frogged Units | AGGREGATE INDUSTRIES - BLOCKS |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| COURSING BRICKS Concrete Coursing Solid Units | AGGREGATE INDUSTRIES - BLOCKS |
| H+H UK LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| COURSING BRICKS Concrete Slips | SUPREME CONCRETE LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| COURSING BRICKS Concrete Slips BS 771-3 CE Marked | LIGNACITE LTD |
| SUPREME CONCRETE LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
