On the 83rd birthday of the 999 service, Jules from the #TeamLAS control room training team explains what happens when you call 999: the questions you may be asked, why we ask these questions and how if you ever need to phone us, you can help us ensure we give the patient the best care for their needs. Remember, 999 is for serious medical emergencies. For urgent medical advice go to: www.111.nhs.uk or call 111 if you cannot get help online. | London Ambulance Service NHS Trust