Courses for learning RP:
Rhotic vs Non-rhotic accents
What is Received Pronunciation? (Note that the definition can vary slightly.)
The Mid-Atlantic Accent (American equivalent of RP)
Received Pronunciation in the media:
Regional accents are still a bar to law careers
"The researchers found that most people would prefer to be represented by a barrister with a posh voice and that lawyers hailing from beyond the home counties — Peake is from Bolton — sound less intelligent or professional."
"Researchers played recordings of a closing speech by the defence in a criminal trial delivered in received pronunciation (RP), the so-called Queen’s English, and in seven other accents. From 99 survey respondents, more than 80 per cent said they would be “comfortable” or “very comfortable” being represented by advocates with RP or southeastern accents."