The government has suffered a series of defeats in the House of Lords on its secret courts legislation.
Peers from across all political parties voted through a series of safeguards to the use of closed material proceedings (CMPs).
CMPs will prevent claimants in civil cases from hearing all the evidence in case of compromising national security.
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Diane Abbott dismissed the idea of the Labour leader standing down even if the party loses both seats in the upcoming by-elections.
Levels of safety are not high enough in prisons, meaning that reform of inmates cannot take place, Prisons Minister Sam Gyimah has said.
The Government's Prevent campaign is "simply not trusted" by many British Muslims, the Independent Reviewer of Terrorism Legislation said.