Cameron defends 'secret courts' plan
David Cameron has defended his plans for secret court hearings, saying they are needed to deal with an issue of national security.
The government wants some civil cases involving sensitive information, which would otherwise have to be settled out of court, to be heard in front of a judge to preserve national safety.
The prime minister told MPs this would happen "in a small number of cases".
But opponents say this would compromise the principle of open justice.
Mr Cameron was questioned about the Justice and Security Bill by the House of Commons Liaison Committee.