| 28M14623 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| A24 | K7766 | BRITISH STANDARDS INSTITUTION |
| A24 PT | K7766 | BRITISH STANDARDS INSTITUTION |
| A24-PT | K7766 | BRITISH STANDARDS INSTITUTION |
| A24PT | K7766 | BRITISH STANDARDS INSTITUTION |
| BSA24GP | K8097 | EUROPEAN GAS TURBINES LTD |
| BSA24PT | K2158 | EUROPEAN INDUSTRIAL SERVICES LTD T/A NETTLEFOLDS |
| PT | K7766 | BRITISH STANDARDS INSTITUTION |