If someone is ill but does not need urgent hospital treatment, they will usually go to see a GP (a family doctor) at a local surgery. GPs can diagnose and treat illnesses but will refer you to other specialists who are better suited to treat that illness. In many cases this means sending someone to a hospital for further medical treatment. It is very important to register with a GP before you become ill because it is through your GP that you can get access to most other health services.
You may also get health advice and information on a medical problem by calling the NHS helpline on 111. This helpline is open 24 hours. Their website has a lot of information about common health problems.