A report by a former prison governor and deputy director at the Ministry of Justice has recommended that six major London prisons are closed.
Brixton, Feltham, Holloway, Pentonville, Wandsworth and Wormwood Scrubs would be amongst 30 nationwide that could be replaced by around ten larger ones.
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He was found close to Harrow and Wealdstone station just before 7pm and was taken to a central London hospital.
Darren February broke into Cowell's home as he and his family slept and his security guard used the toilet.
Pilots taking off or landing at the west London airport were targeted 151 times in 2016.