You should also have travel insurance for Europe. Whilst EHIC will give you (or should) what a local will receive, that does vary and not everywhere covers to the extent of the NHS.
Yes, good advice! On that link I provided, down towards the lower right where it says 'Also on NHS Choices', there are further links to 'Country-by-country guide' (for the EU) & also 'Seeking medical treatment in Europe'. These give some idea of what treatment (and costs) you could expect, depending on the country you are intending to visit.
We watched a video guide awhile back on 'money-saving travel tips' - I think it was something produced by the Guardian perhaps? Anyway, that was saying that if you're only going for a weekend, it *might* not really be cost-effective for taking out a travel insurance policy on only a day or two away (to the EU) but you definitely should for any longer than that. Of course, everyone's health & circumstances are different & you can never really plan for accidents, etc... So you pays your money & takes your chances etc.