That's such a shame that people are so snobby about the Bristol accent. 
Josie Gibson has done well with her strong regional west country accent, but she the exception rather than the rule. See also Alison Hammond: strong regional (Brummie) accent but still popular, and in demand. But not that many people with her accent have done well in TV really (as presenters.) It's such a shame Maya is made to feel that she has to hide her authentic accent.