Although the number of patients seeking treatment elsewhere in the European Union is small,3 this could easily change, especially if people are faced with growing waiting lists or other forms of rationing as the new groups seek to control their budgets. British residents have had the right to obtain treatment in another EU country since 1971.4 Initially, the opportunities were limited mainly to people who fell ill when abroad or, less often, when the NHS agreed that there were good reasons for patients being treated abroad (for example, a citizen of another country resident here returning home to give birth