| 28X3445 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 5P | K7766 | BRITISH STANDARDS INSTITUTION |
| BSW12-5P | K7766 | BRITISH STANDARDS INSTITUTION |
| BSW9-5P | K7766 | BRITISH STANDARDS INSTITUTION |
| W9 | K7766 | BRITISH STANDARDS INSTITUTION |
| W95P | K7766 | BRITISH STANDARDS INSTITUTION |