I'm an EU national who, for the most part, have lived in the UK since 2009 (2 years of school, 4 years of uni with one year USA exchange, now working full time for the last 15 months).

I'm considering going off to travel the world for several months, stopping of to help out at farms, maybe do some freelancing, or get involved in local start-ups - the point is, I won't have a permanent address. Technically, I can probably keep using my houseshare as my correspondence address, and stay there every now and then, but my room would be rented out to someone else. The point is, I can stay in the UK legally at the moment, and I am considered a resident here, not at my home country.

I was wondering how leaving for extended travel might affect my UK residency status, particularly for things like using the National Health Service. If I end up in any health trouble, would I be forced to seek treatment in my home state where I wasn't resident for the last 7 years, or could I do that in the UK?