Indian Statutory Commission

The Indian Statutory Commission, commonly referred to as the Simon Commission was a group of seven British Members of Parliament of United Kingdom under the chairmanship of Sir John Allsebrook Simon assisted by Clement Attlee. The commission arrived in British India in 1928 to study constitutional reform in Britain's most important colonial dependency. One of its members was Clement Attlee, who became committed to Indian independence by 1934 and achieved that goal as Prime Minister in 1947 in the granting of independence to India and Pakistan.

At the time of introducing the Montagu–Chelmsford Reforms the British Government declared that a commission would be sent to India after ten years to examine the effects and operations of the constitutional reforms and to suggest more reforms for India.

In November 1927 the British government appointed a commission under the chairmanship of Sir John Simon to report on India's constitutional progress for introducing constitutional reforms as had been promised.

The Government of India Act 1919 had introduced the system of diarchy to govern the provinces of British India. The Indian public clamoured for revision of this form of government, and the Government of India Act 1919 itself stated that a commission would be appointed after ten years to investigate the progress of the governance scheme and suggest new steps for reform. In the late 1920s, the Conservative government then in power in Britain feared imminent electoral defeat at the hands of the Labour Party, and also feared the effects of the consequent transference of control of India to such an "inexperienced" body. Hence, it appointed seven MPs to constitute the promised commission to examine the state of Indian constitutional affairs.

...
Wikipedia