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List of last helicopters seen near/at Porton| AH-64E | UD024 | ZM723 / DRKSTR2 | AAC | |
| AH-64E | UD001 | ZM700 / G30 | AAC | |
| AH-64E | UD028 | ZM727 / UGLY50 | AAC | |
| AH-64E | UD027 | ZM726 / VIPER2 | AAC | |
| AW109E | 11131 | G-ETPI / ETP87 | ||
| AW109S | 22119 | G-ETPN / ETP114 | QinetiQ | |
| AW169 | 69027 | G-DSAA / HLE10 | DSAA | |
| H125 | 8485 | G-ETPH / | MoD | |
| H125 | 8462 | G-ETPE / ETP06 | ETPS | |
| H125 | 8476 | G-ETPG / ETP07 | ETPS | |
| H125 | 8464 | G-ETPF | ETPS | |
| EC135T3H | 2015 | ZM515 / IRNMN2 | DHFS | |
| H145D3 | 21317 | ZZ145 / BDN038 | MoD | |
| R66 | 1001 | G-RNJW |
