Wouldn't "Are you English" be translated as "Angol vagy?"

To clarify, this is asking is someone is from England, not that they are an English speaker, right?

I heard it three times. I always understand "Öl" instead of "Ön".

Are you Englishman?

No one really asks "Are you an Englishman?" in English, rather "Are you English?". After all, you wouldn't ask a woman if she's an "Englishman", but neither would you ask a man, as presumably his gender is not in question.