Labour's shadow justice secretary Sadiq Khan has described the government's prison reforms as "tinkering around the edges" of the problem.
Khan told Daybreak that it should be investing in more women's treatment centres and more smaller prisons. He said in an earlier statement: "With only a small number of scattered women’s prisons, the concept of local resettlement is almost meaningless."
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Part of what has gone wrong is that many voters do not see Jeremy Corbyn as a credible prime minister.
The rapper joins previously announced headliners Kasabian and Muse at the top of the bill.
The pair, both believed to be in their 20s, were found at the edge of a road after being hit at a bus stop in the ski resort of La Clusaz.