It is one of those things that we hope we will not need to know, but it is always worth reading up about medical treatment in the area you are travelling too. This is most important when going abroad but you should also check even if staying in the UK. If you have a specialist medical condition then you will need to search for hospitals that could treat you should you need assistance. If you are pregnant, then you may want to find nearby maternity hospitals and also ensure you have your pregnancy notes with you at all times.
Many larger complexes have a doctor on site or nearby that you can see. Check with reception to see what you need to do if you should require a doctor as often there will be a dedicated phone number you can call.
When going away from home it is always best to plan for situations such as medical emergencies. It is better to know what to do and not have to use it than not have a clue and find yourself panicking in an already stressful situation.
If you need prescription medicine, be sure to take a copy of a recent prescription with you when travelling.