| 28Y3004 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| A | K7766 | BRITISH STANDARDS INSTITUTION |
| AB/1/2/11302 | K4244 | BAE SYSTEMS GLOBAL COMBAT SYSTEMS LIMITED |
| SP66 | K7766 | BRITISH STANDARDS INSTITUTION |
| SP66-A | K7766 | BRITISH STANDARDS INSTITUTION |
| SP66A | K7766 | BRITISH STANDARDS INSTITUTION |