Showing 394 registered airlines with a combined fleet of 1,328 airframes.
| Airline Name | ICAO / IATA | Fleet Size |
|---|---|---|
| Millen Corporation | RJM | 0 |
| Ministry of Agriculture, Fisheries and Food | WDG | 0 |
| MK Airline | MKA | 0 |
| Monde Air Charters | MDB | 0 |
| National Air Traffic Services | RFI | 0 |
| National Grid plc | GRD | 0 |
| Natural Environment Research Council | EVM | 0 |
| Neric | NSL | 0 |
| Netjets UK | NJU | 9 |
| Nimbus Aviation | NBS | 0 |