| 5CW6233 | U1278 | MINISTRY OF DEFENCE NAVY |
| 5CW6233 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| A | K7766 | BRITISH STANDARDS INSTITUTION |
| BSA54-A | K7766 | BRITISH STANDARDS INSTITUTION |
| BSA54A | K7766 | BRITISH STANDARDS INSTITUTION |
| P8389 | K7776 | AMETEK AIRTECHNOLOGY GROUP LIMITED |
| P8389 | U1608 | HOWDEN WADE LTD THERMAL CONTROLS DIV SION |