The narrator is English, one of the voices he's doing is Southern British English , the other is supposed to be Irish - what we call "stage Irish"- it doesn't sound authentic to me (I'm Irish), but it's recognisable what accent he's attempting, and to non-Irish native speakers it might sound authentic

There are three accents here: the narrator's 'own' voice, plus the two accents of the characters he's portraying. I agree with Aisling that first character we hear is a rather exaggerated 'stage Irish', while the second character - the 'tempter' - is fairly posh southern English. To a native speaker's ear, these two accents are very obvious indeed. The only point I disagree on is the narrator's voice. It is not English. In fact, it's a soft Scottish accent, possibly from Edinburgh. Listen to how he says 'eagerly' around 20 sec. - that's clearly a Scottish voice.

Hello, In which part are you interested in the accent? The narrator is doing a variety of accents in this clip. Thanks, Lana