The addition of the letter ‘h' to the front of ‘aitch'...ie the name of the letter itself...is generally regarded as uneducated. In fact, The Oxford English Dictionary - the ‘bible' of English words - does not even list it.
It appears to have originated in Irish English and is relatively common in Australian speech. That is possibly because many Irish religious Brothers took teaching positions in the early days of settlement there. Maybe it's creeping into British English because of the influence of Australian soaps, just as the question-tone in statements seems to have done.