The Nehru Report was published by a comittee of the All Parties Conference in order to propose a new constitution for the state of India, drawn up by Indians. The report was issued in response to continued British administration of Indian affairs without their involvement. The British government actually responded to complaints that they had put together another commission on India without including any Indians by challenging the Indian people to write their own constitution. The Nehru report is a response to that challenge.
This constitution proposed in the Nehru Report included a Bill of Rights and provisions to establish a Supreme Court. It offered some systemic solutions for language differences, including accepting all regional character sets as acceptable at the national level. It did not name a state religion.
The British government did little in response to the Nehru Report.