| 327 | K7766 | BRITISH STANDARDS INSTITUTION |
| 5330-857421 | U1278 | MINISTRY OF DEFENCE NAVY |
| DEFSTAN02-337-327-MN80 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| BS1806-327 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-327 | K7766 | BRITISH STANDARDS INSTITUTION |
| GNSS003044 | KC6K3 | LEAFIELD LOGISTICS & TECHNICAL SERVICES LIMITED |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-327-MN80 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-327-MN80-(N83B) | L6427 | MOBILE VALVE REPAIRS |
| NES337-327-MN80-(N83B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |