Funnily enough, while the mid-Atlantic screen accent was dying out post WW2, its English equivalent, RP, was being kept well and truly alive in the UK by the BB

Funnily enough, while the mid-Atlantic screen accent was dying out post WW2, its English equivalent, RP, was being kept well and truly alive in the UK by the BBC. Actors like Richard Burton and Anthony Hopkins were instructed to drop their Welsh accents if they wanted to progress in their acting careers, as RP was the "right" way for an actor to speak. Even in other professions, regional accents were replaced by RP. My father was told to drop his Welsh accent if he wanted to become a lawyer. RP was only really dropped in the 1980s. On a side note, is Clara Bow's story the basis for "Singing in the Rain"?