Why did Britain pay attention to Indian Politics?

1)       When the British came to India, India was ruled by the Mughals.
2)       In 1615, the East India Company started to dabble in Indian politics as the Mughals rule began to show the signs of decline with intra dynasty (family) conflicts cropped up after the death of Badshaha Aurangzeb.
Thus, the Britain started to pay attention to Indian Politics