| A567 | K3834 | RACAL ANTENNAS LTD |
| SP67 | K7766 | BRITISH STANDARDS INSTITUTION |
| UX16104 | K5086 | ROLLS-ROYCE POWER ENGINEERING PLC (ROLLS-ROYCE & ASSOCIATES) |
| SP67-B | K7766 | BRITISH STANDARDS INSTITUTION |
| SP678 | K7766 | BRITISH STANDARDS INSTITUTION |
| SP67B | K7766 | BRITISH STANDARDS INSTITUTION |
| UX16104 | KD638 | MINISTRY OF DEFENCE NUCLEAR PROPULSION IPT NP IPT |