You’re right, I’ve made an utter arse of that, ha ha! I meant to type “honour”.

I think the difficulty people have is when writing English down. In speech they will generally get this stuff right automatically, but when it’s on paper “a history honour” can easily look right even though it’s not.

EDIT - I am dumb.

Definitely “a history” for me but someone who drops the h for accent reasons, eg a cockney accent, would likely say “an 'istory”.

How they would write it, I’m not sure.