What is the percentage of people in britain who speaks what Upper class characters were presented in 
Witness: Five Plays from the Gospel of Luke:  Upper class characters were presented in Received Pronunciation, city-folk in Jerusalem in London working-class accents, and Romans such as Pilate and the Centurion in an American accent. Received Pronunciation:  Peter Trudgill estimated in 1974 that 3% of people in Britain were RP speakers, but this rough estimate has been questioned by the phonetician J. Windsor Lewis.
3%