No vaccinations are required for entry into Britain. Citizens of all EU countries and those with a reciprocal health care agreement are entitled to free medical treatment at National Health Service hospitals. If you don't fall into either of these categories, you will be charged for all medical services, in which case health insurance is strongly advised. Indeed, even though EU health care privileges apply in Britain, visitors from elsewhere in the EU would also do well to take out an insurance policy before travelling to cover against theft and loss as well as illness or injury