Currently the NHS does NOT have a single summary of all aspects of your previous and current health information – maybe one day. Hospital, GP and pharmacy computers do not link up.
It is therefore a good idea to keep a record of all your medical information. As you cannot assume the (perhaps new) health professional in front of you, knows all about you.
Whenever you attend your GP, hospital (either for a routine appointment or A&E or any other out-of-hours service), you need access to all this information.
Mistakes. Doctors and nurses may make a mistake if they do not know all about you. It is also quicker for a new health professional not to have to ask many questions. This makes more time for them to examine you, and think about the best plan.
We have described how to keep a medical record and why. It is one of the most important things you can do, to contribute to your healthcare.