Showing 394 registered airlines with a combined fleet of 1,328 airframes.
| Airline Name | ICAO / IATA | Fleet Size |
|---|---|---|
| Lossiemouth Flying Training Unit | LOS | 0 |
| Lydd Air | LYD | 0 |
| Manhattan Air | MHN | 0 |
| Mann Air | MNR | 0 |
| Manx Airlines | MNX | 0 |
| Marham Flying Training Unit | MRH | 0 |
| Markoss Aviation | MKO | 0 |
| Marshall Aerospace | MCE | 0 |
| Martin-Baker | MBE | 0 |
| Martyn Fiddler Associates | MFA | 0 |