Who took control of India in 1757?

India was still under the control of the marathas.Only the british had defeated the nawab of Bengal ''siraj-ud-daula'' and had acquired a nominal power in Bengal by putting a puppet by the name of ''mir jafar'' on the throne of Bengal.so,in that sense no one actually took control of India.It was however done partially,if not completely,in 1764 after the defeat of the mughals in the battle of buxar at the hands of Sir Hector Munro.