I'm going to take your advice and try and tackle Urdu, as a local I guess you have a better idea than I do. (I try not to talk to my patients unless I really have to...) It seems though, that there are certain litle groups of families who don't speak English, and so when I enter their homes I end up having to be translated via an 8year old who has learnt English from school. I imagine that these families don't travel much beyond Green street, where they don't need to speak English.