A review of the Windrush generation scandal will have "full access" to Home Office information, Theresa May has promised ahead of a Labour move to force disclosure of internal documents.
The Prime Minister, who was home secretary before entering Number 10, promised a "package of measures to bring transparency on the issue".
Labour hopes to use a parliamentary procedure to force ministers to hand over correspondence - including text messages and emails - between ministers, officials and special advisers between May 2010 and 2018.
At Prime Minister's Questions, Mrs May said Home Secretary Sajid Javid would set out the actions being taken by the Government on the issue.
She said "speed is of the essence" and Mr Javid "will be commissioning a full review of lessons learned, independent oversight and external challenge with the intention of reporting back to this House before we rise for the summer".
The review will have "full access to all relevant information in the Home Office, including policy papers and casework decisions".
-- Labour Press Team (@labourpress) May 1, 2018
Shadow home secretary Diane Abbott said the scandal had "exposed something rotten at the heart of Government" and "full disclosure of the facts" was required.
The Tories are expected to oppose Labour's motion, which would see the internal documents handed to the Home Affairs Committee.
The rarely-used procedure - called a "motion for a return" - involves asking the Queen to direct her ministers to provide the requested documents.
Ms Abbott said: "With the resignation of Amber Rudd, Theresa May has lost her human shield and must now fully account for the policies she created and drove through from the Home Office into Downing Street.
"The Windrush scandal has exposed something rotten at the heart of Government. We need to know what has led to this situation."