The Chair of the prison watchdog says morale among staff and prisoners is so low due to cuts that she fears there could be riots. The watchdog says Wormwood Scrubs prison is on a "knife edge" with inmates being locked up for up to 23-and-a-half hours a day.
The watchdog says there has been a 50% rise in use of force and restraint of prisoners at the Victorian prison.
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Pictures of today's events unfolding following a major security incident at the Houses of Parliament.
At least two people have died after a knifeman brought terror to the heart of Westminster.
The Cobra committee brings together government ministers with senior officials of the emergency services and security agencies.