A senior officer has said there will be "nerves" among military personnel who are missing Christmas leave to drive ambulances during NHS strikes on Wednesday.Personnel were shown defibrillators, burns kits, and other equipment before being talked through how to operate vehicles by London Ambulance Service trainers.The stand-ins are not expected to be sent on critical emergency callouts or carry out clinical tasks.

A senior officer has said there will be "nerves" among military personnel who are missing Christmas leave to drive ambulances during NHS strikes on Wednesday.Personnel were shown defibrillators, burns kits, and other equipment before being talked through how to operate vehicles by London Ambulance Service trainers.The stand-ins are not expected to be sent on critical emergency callouts or carry out clinical tasks.