| 28Q19076 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 30-292-161-01 | K1790 | STS SIGNALS LTD |
| 36-332-101-02 | K0481 | SMITHS INDUSTRIES LTD |
| 3402-0012-002 | K0656 | BAE SYSTEMS (OPERATIONS) LIMITED |
| 36-332-101-02 | K5294 | GE AVIATION SYSTEMS LIMITED |
| 37F615 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| C0M297-1 | K0100 | MEGGITT (UK) LIMITED |
| L804-038 | K0233 | THALES OPTRONICS LIMITED |
| R062M4AA | K0663 | FERRANTI TECHNOLOGIES LTD |
| DEFSTAN53-92PT1 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| 991-4-00087-001 | K1423 | BRITISH AEROSPACE LAND & SEA SYSTEMS POST DESIGN SERVICES |
| NL5001 | K4358 | SAFRAN ELECTRICAL & POWER UK LTD |
| SP77 | K7766 | BRITISH STANDARDS INSTITUTION |
| 5D3216 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| SP77-202 | K7766 | BRITISH STANDARDS INSTITUTION |
| SP77202 | K7766 | BRITISH STANDARDS INSTITUTION |