Having gone to the Internet for advice (and I don't mean just Googling symptoms and taking a guess, I mean those actual pay for medical advice sites), I have a handle on what your GP is for - they provide some sort of accountability and responsibility.

Once, at my wits end with a problem with my child I went to one such site even though I knew it was a bad idea - it's basically a stackoverflow but staffed by real doctors (apparently) and you pay per answer. It's not terribly expensive, but literally any advice you have will be totally vague and contain the instruction to "see your GP". No reputable professional would put their nuts on the line for a remote diagnosis.