Is this a "posh" accent

[thetwilightzone]

I know it's an English accent but which one is it. Would like to learn how to speak like that.

 

[Nofaith]

I can't detect a regional accent.
It sounds like it's a trained accent.

 

[lv-gras]

look up received pronunciation

 

[lv-gras]

fun fact, ppl tend to use received pronunciation for shakespeare, but he actually probably didn't sound like that at all