Justice Secretary David Lammy is under growing pressure after two prisoners were released from the same London jail by mistake.
Lammy, who is also deputy prime minister, had promised to introduce the "strongest checks ever" to prevent further errors after the accidental release of migrant sex offender Hadush Kebatu from Chelmsford prison in Essex last month.
But on Wednesday it emerged two more men - including an Algerian sex offender - had been mistakenly released from Wandsworth prison over the past week.
Conservative shadow justice secretary Robert Jenrick said Lammy has "got to get a grip", describing the situation as "a total shambles".

