I have posted this regarding EHIC as I read this on the UK Department of Health site:

==="Studying in another EEA country or Switzerland===If you are ordinarily resident in the UK but are studying, or planning to study, in another EEA country or Switzerland as part of a UK course, you'll need an EHIC for yourself and any dependants who go with you. You can only apply by post, and must enclose the following information with your completed application form:

• name and address of UK educational institution
• address where studying overseas
• period of study
• details of qualification that you are studying for.

If your studies are not a compulsory part of a UK course, you will be eligible for a UK-issued EHIC for the first 12 months only. After that you will need to obtain healthcare cover from the country that you are studying in or buy private insurance. Again, you can only apply for your EHIC by post, and must enclose the following information with your completed application form:

• address where studying overseas
• period of study
• details of qualification that you are studying for."