When I went to university in Lancaster, I didn't know what a "bacon bap" was (it's a plain bread roll with bacon inside, maybe butter if you're lucky). People ate them for breakfast.
If someone said "batch", I'd probably be confused with "bach" (NZ slang for a small apartment, which is pronounced as if it has a "t" in it).
To save time reading the article, here's the list.
bread roll, blaa, batch, barm, teacake, currant teacake, muffin, bun, cob, oven bottoms, scufflers, breadcakes, barm cake, soft bap, crusty cob.
And a pun. How did the baker get an electric shock? He stood on a bun and a currant ran up his leg.