The Hampshire and Isle of Wight Air Ambulance has been given the all clear to resume flying.
It and other services were grounded for safety checks in light of the crash in Glasgow.
The Dorset and Somerset Air Ambulance and the Thames Valley and Chiltern have yet to resume their services.
More top news
Radical new trains that will carry millions of passengers on the Thameslink network will be launched today.
Tuesday morning's forecast for the east of the region
Tuesday morning's forecast for the west of the region