| 16E4256 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 19724 | U1278 | MINISTRY OF DEFENCE NAVY |
| DEFSTAN29-2 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| CN | K1872 | MORGAN ADVANCED CERAMICS LTD |
| CN | U0484 | MORGAN ADVANCED CERAMICS LTD |
| 6MT4-9334 | U1269 | MINISTRY OF DEFENCE - DEFENCE LOGIST S ORGANISATION DLO |
| F50 | K1872 | MORGAN ADVANCED CERAMICS LTD |
| F50 | U0484 | MORGAN ADVANCED CERAMICS LTD |
| F10 | U1088 | DELPHI AUTOMOTIVE UK LTD |
| L10 | U1624 | FEDERAL-MOGUL IGNITION UK LTD |
| L86C | U1624 | FEDERAL-MOGUL IGNITION UK LTD |