LAA helicopters operate from Whitechapel but stay overnight at RAF Northolt. In May 2018, LAA used Helimed 27 as the duty callsign. Helimed 28 was only used if both helicopters were called out. 
At the 2022 Farnborough Air Show, it was announced that the two H135 airframes are due to be delivered in Sep and Oct 2024 respectively.
Locations | |
| Years | Location | ICAO/FAA |
| 1989/ | Royal London Hospital | |
Models | Login to Edit | |
| Years | Models |
| 2024 | EC135/H135 |
| 2000/ | MD902 Explorer |
| 1989/00 | SA365 Dauphin 2 |
London Air Ambulance List of helicopters | Help Us | |
| C/N | Version | Built | In this Org | In other Org | |
 | 900/00068 | md902 | 2000 | G-EHMS : London Air Ambulance (LAA) from Jul00 : LAA pictured in brilliant first time landing straight onto the mobile pla+ : 04mar16 London Air Ambulance named this helicopter Rowan : In use by London Air Ambulance ( LAA ) via Specialist Aviation Services as+ : |  N3212K |
| 6009  | sa365n | 1982 | G-HEMS : G-HEMS allocated Aug 1988, a/c delivered to LAA from Marseilles Dec 1988 a+ : London Helicopter Emergency Medical Service / London Air Ambulance until 2+ : 12+13may90 LAA at North Weald Fighter Meet Airshow | - N365AM - 8P-BHD  G-HEMS G-PDGK |
| 900/00125 | md902 | 2008 | G-LNDN : London Air Ambulance from Aug15 : Feb16 London Air Ambulance named this helicopter Walter : In use by London Air Ambulance via Specialist Aviation Services as Helimed+ : Jan19 pictured (pic2) with LAA : | N999GQ - N999GQ  A7-NHA |