Apple has the same 1-year standard warranty in the UK as it does in the U.S.
Apple Care + (additional coverage) if purchased has the same 2 year warranty in the U.K. as in the U.S.
Outside of what Apple offers, from my understanding, in the EU there is a consumer law that requires the seller of your apple product (which may not be Apple) to fix a defective product anywhere from 2 years in some countries to 5 or 6 in others BUT from what I've heard that doesn't work well at all in practice because you have to prove that your item was defective when you bought it which is pretty difficult. Most people are gonna recognize an already defective item before their standard 1 year Apple warranty expires anyway.
So in that case it definitely doesn't function like an Apple standard warranty where they'll fix it if it fails on its' own whenever. You also gotta remember that EU law falls on the responsibility of the seller and if you didn't buy it an Apple Store then they are not the seller. On top of that, like I said you have to somehow prove it was already defective WHEN you bought it. Alot of people have reported being out of luck with a broken Apple product in the U.K. once their standard Apple warranty runs out.
That law also definitely doesn't cover the two accidental damage repairs you would get if you purchased Apple Care +.
