Government plans to tackle the prisons crisis will fall short of thousands of cells and be £4bn over-budget in two years' time, a watchdog has warned.
A critical National Audit Office (NAO) report flags that current expansion plans are "insufficient to meet projected future demand", with a projected shortage of 12,400 prison places by the end of 2027.
The government has already released 5,500 prisoners early in an emergency plan to free up cells and stop the justice system collapsing, and has also announced a sentencing review aimed at providing more non-custodial sentences.
The NAO report said the crisis was a "consequence of previous governments' failure" to properly fund prisons at the same time as increasing the length of prison sentences.