Received Pronunciation (; RP) is the accent of Standard English in the United Kingdom, with a relationship to regional accents similar to the relationship in other European languages between their standard varieties and their regional forms. RP is defined in the Concise Oxford English Dictionary as "the standard accent of English as spoken in the south of England", although it can be heard from native speakers throughout England and Wales. Peter Trudgill estimated in 1974 that 3% of people in Britain were RP speakers.