When was the Indian Civil Service Act passed?

The Indian Civil Services Act was passed in 1861 under the Viceroyalty of Lord Canning. It provided the reservation of certain principal posts for the members of the covenant services. Thus, the Principal posts were reserved for the British.

Regardless, it still paved the way for Indians to be a part of the administration.

For further reading check the following articles:

• Government of India Act, 1858
• British Raj