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List of last helicopters seen near/at Denham| 206L-1 | 45729 | G-LONE | Patriot Aviation | |
| 369D | 71-1019D | G-HKHM | HQ Aviation Ltd | |
| 429 | 57398 | G-RIDC | National Grid | |
| 480 | 5027 | G-WOOF | ||
| A119 | 14957 | G-MADX / SXN24 | ||
| AB206B | 8717 | G-XXIV | ||
| AS350B3 | 3463 | G-OOIO | ||
| AS355F2 | 5450 | G-INTV | ||
| AS355F2 | 5483 | G-NBPL | ||
| AS355F2 | 5449 | G-TVHD | ||
| AS355N | 5744 | G-OFZY / JKY51 | Atlas Helicopters | |
| AS355NP | 5801 | G-TIJL | ||
| AW109E | 11798 | G-KGRP | ||
| AW109S | 22148 | G-UCCY / CASTLE05 | Castle Air | |
| AW109S | 22009 | G-ORCD / CASTLE07 | Castle Air | |
| AW109SP | 22259 | G-GPOT / CASTLE10 | Castle Air | |
| AW109SP | 22447 | G-FRGP | ||
| AW109SP | 22271 | G-MAOL | Sloane Helicopters | |
| AW109SP | 22452 | G-SIRT | ||
| AW109SP | 22347 | GZ100 / RRR723 | 32 (The Royal) Squadron | |
| AW109SP | 22420 | G-THDR / SXN21 | ||
| AW119KX | 14961 | G-HZRD / SXN22 | ||
| AW119KX | 14962 | G-WHIP / SXN23 | SaxonAir | |
| AW139 | 31708 | G-LXRY / CASTLE06 | Castle Air | |
| AW139 | 31541 | EI-LIM | Westair Aviation | |
| AW139 | 41265 | T7-LSS | Skymedia AG | |
| AW169 | 69053 | G-GETU | ||
| AW169 | 69147 | G-NICU / HLE80 | TCAA | |
| AW189 | 92007 | G-MCGU / SRD163 | St. Athan sector | |
| Cabri G2 | 1140 | G-CORY | ||
| Cabri G2 | 1093 | G-FPEH | ||
| Cabri G2 | 1136 | G-OGTC | ||
| CH-47D | M.4455 | ZH892 / SHF251 | 18 Squadron | |
| CH-47D | M.7031 | ZA683 / SHF450 | 27 Squadron | |
| EC130B4 | 4590 | G-YBES | ||
| EC135T2+ | 0656 | G-DVAA / HLE24 | DAAT | |
| EC155B1 | 6748 | G-LCPX / SSP22 | ||
| EC135T3H | 2246 | G-LAAB / HLE28Z | Airbus Helicopters UK | |
| EC135T3H | 2012 | ZM513 / SYS117 | DHFS | |
| H145D2 | 20112 | G-WENU / HLE67 | WAAC | |
| H145D2 | 20343 | M-AJOR | ||
| H145D3 | 21263 | G-HFLW | Capital Air Services Ltd | |
| H160 | 1023 | M-SKTO | ||
| MD500E | 0537E | G-HWKW | ||
| MD520N | LN062 | N520EA | Eastern Atlantic Helicopters | |
| MD902 | 900/00125 | G-LNDN | LAA | |
| BETA | 3234 | G-EMAC | HQ Aviation Ltd | |
| BETA | 1663 | G-GOUP | ||
| BETA | 2677 | G-HIZZ | ||
| BETA | 1201 | G-KKRN | ||
| ASTRO | 0381 | G-HERZ | ||
| CADET | 30079 | G-DDAD | ||
| CADET | 30078 | G-ICET | ICE Helicopters | |
| CADET | 30047 | G-ICEZ | ICE Helicopters | |
| CLIPPER II | 11893 | G-CLJR | ||
| II | 10772 | G-GSPY | ||
| RAVEN | 2413 | G-CLEZ | ||
| RAVEN II | 14172 | G-COPR | ||
| RAVEN II | 10351 | G-DSPZ | ||
| RAVEN II | 10942 | G-GOES | ||
| RAVEN II | 11754 | G-HVER | ||
| RAVEN II | 12168 | G-LINJ | ||
| RAVEN II | 14561 | G-RAWM | HQ Aviation Ltd | |
| RAVEN II | 11963 | G-RBRI | National Grid | |
| R66 | 0942 | G-MSPR | ||
| R66 | 0638 | G-TLMI | HQ Aviation Ltd | |
| R66 | 0228 | G-NJNH / PIPE68 | ||
| R66 | 0932 | G-WILC | ||
| R66 | 0631 | G-FLOE | ||
| R66 | 0058 | G-JSAW | ||
| R66 | 0873 | N166BZ | ||
| MARINE | 0888 | G-HKHK | ||
| MARINE | 0877 | G-SAPA | ||
| S-76C | 760807 | M-JCBA / M-JCBD | JCB |
