Women have always worked in India, but the rise of the corporate woman in the last two decades in the banking sector has been phenomenal.

India has no fewer than eight female banking bosses - indeed the appointment of Arundhati Bhattacharya as the first chairwoman of the country's largest bank, the State Bank of India, came days before the announcement of the new Federal Reserve nominee in the US, Janet Yellen.

It's a stark contrast to places like the UK, where women run the British arm of international banks, but there are no overall female bosses. So how has India done it?