Received pronunciation, or RP, refers to an accent in English regarded by many people as a ‘standard' accent. It has also been called ‘the Queen's English' or ‘BBC English'. In the past, RP had high status in the UK, indicating an educated speaker, and this transferred into EFL where it has been used as a model for pronunciation. With the emergence of international English, the recognition of the equality of a variety of accents, and the emphasis on authentic communication, learners now become aware of a wider range of accents.
In RP bath is pronounced with an /a:/ sound. In other UK accents it can be pronounced with an /æ/.
In the classroom
Using authentic listening texts is one way to expose learners to a variety of accents. Sources for this include films, online radio broadcasts and podcasts, and guest speakers.