In case of an emergency, go directly to the nearest hospital with an Accident and Emergency (A&E). Hospitals with A&Es are usually open 24 hours a day.
In the UK emergency patients are treated free of charge. Only if you are hospitalised for more than one night and are a national of a country without a reciprocal health agreement with the UK, would you be later be asked to pay for treatment. You will not be refused emergency medical treatment.
If you have a medical emergency and unable to physically get to the hospital, you should call the emergency telephone number 999 and an ambulance will be sent to you.
In non emergency situations you should phone your GP, they will assess the seriousness of the situation. Depending on the time of day you may be asked to go to the surgery, go to an out of hours facility or they may decide a house call is most appropriate. If they consider the medical situation to be serious they may recommend you go straight to the hospital via the A & E Department.
There are some private 24-hour doctor services that make house calls.
The NHS also runs a 24-hour helpline:
NHS Direct provides a wide range of health advice and information.