Mumbai, India (London)

Hi, there seems to be very little information on moving to Mumbai. We are a UK family who are thinking about opening up an additional office in Mumbai and relocating to live. Can anyone of you give us information on areas to reside, costs of living etc. We would be looking for a western compound/villa area and western - uk/american schools. Our kids are currently in private education in the uk so continuance of good schooling is very important. Also I am a Western woman looking for a support structure of sorts... other than the HSBC country profile can anyone help?? Many thanks to all X