| BLOCKS by Strength K values (3pc Moisture Content) 2.8 N per Square mm | AGGREGATE INDUSTRIES - BLOCKS |
| FORTERRA BUILDING PRODUCTS LIMITED |
| H+H UK LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| BLOCKS by Strength K values (3pc Moisture Content) 3.5 N per Square mm | AGGREGATE INDUSTRIES - BLOCKS |
| FORTERRA BUILDING PRODUCTS LIMITED |
| H+H UK LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| BLOCKS by Strength K values (3pc Moisture Content) 4.0 N per Square mm | AGGREGATE INDUSTRIES - BLOCKS |
| H+H UK LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| BLOCKS by Strength K values (3pc Moisture Content) 7.0 N per Square mm | AGGREGATE INDUSTRIES - BLOCKS |
| FORTERRA BUILDING PRODUCTS LIMITED |
| H+H UK LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| BLOCKS by Strength K values (3pc Moisture Content) 8.7 N per Square mm | AGGREGATE INDUSTRIES - BLOCKS |
| H+H UK LTD |
| BLOCKS by Strength K values (3pc Moisture Content) 10.0 N per Square mm | AGGREGATE INDUSTRIES - BLOCKS |
| FORTERRA BUILDING PRODUCTS LIMITED |
| H+H UK LTD |
| THOMAS ARMSTRONG (CONCRETE BLOCKS) LTD |
| BLOCKS by Strength K values (3pc Moisture Content) 15.0 N per Square mm | FORTERRA BUILDING PRODUCTS LIMITED |
| BLOCKS by Strength K values (3pc Moisture Content) 21.0 N per Square mm | FORTERRA BUILDING PRODUCTS LIMITED |
| BLOCKS by Strength K values (3pc Moisture Content) 24.0 N per Square mm | FORTERRA BUILDING PRODUCTS LIMITED |
| BLOCKS by Strength K values (3pc Moisture Content) 35.0 N per Square mm | FORTERRA BUILDING PRODUCTS LIMITED |
