The Indian Civil Service (ICS), officially known as the Imperial Civil Service, was the higher civil service of the British Empire in India during British rule in the period between 1858 and 1947. Its members ruled over more than 300 million people in the Presidencies and provinces of British India and were ultimately responsible for overseeing all government activity in the 250 districts that comprised British India. They were appointed under Section XXXII(32) of the Government of India Act 1858, enacted by the British Parliament. The ICS was headed by the Secretary of State for India, a member of the British cabinet.