Indian Independence - British Circumstances

During the world war - 2, Britain had spent lot of money. After the world war - 2, it became expensive for them to rule India. So, they gave Independence to India. For the same reason, they gave independence to Jordan in 1946, Palestine in 1947, Sri Lanka and Myanmar in 1948, and Egypt in 1952. For the same reason, France also had to grant independence to Laos in 1949, Cambodia in 1953, and Vietnam in 1954.

If there had been no world war - 2, and if Britain had not lost money, it would not have given independence to India for decades.

Even if Gandhi and other leaders of Congress had not done anything for Independence, still, Britain would have left India, purely because of financial reasons.