Why do they have to have these extras and new characters speaking in an outrageously stupid mockney accent? Keith sounded like a dick when he came in: "mah nayme is keef aynd ah dant knaa waa ahm ere" and naturally Cas tries to flirt with him. Could they not have had an actress who we can associate with working class East Londoners than someone who became famous for playing a middle class banker who lived in leafy Blackheath?
Might as well dig up Dick Van Dyke and get him to play a binman.