Labour's party chair Bridget Phillipson has challenged the Conservatives' pledge to build 50,000 additional prison places, pointing to a net rise of only 482 operational places between 2010 and 2024.
Phillipson said the Conservatives were "taking the public for fools" as Kemi Badenoch unveiled the proposal ahead of her party's conference.
"These proposals are just not credible from a party who left our criminal justice system at breaking point," she said.
The 50,000-place pledge versus the record
The Conservatives propose spending about £2 billion a year, with most of the additional places delivered within one Parliament and the full programme completed within seven years. Their proposed funding cuts include reducing overseas aid spending to £1 billion annually.
Ministry of Justice figures show that operational prison capacity in England and Wales rose by a net 482 places between May 2010 and April 2024. That figure measures the change in available capacity between two dates, not the total number of cells built: new places were delivered while closures and deterioration reduced capacity elsewhere.
Badenoch has acknowledged that the increase achieved under previous Conservative governments was insufficient.
Labour's delivery programme
Labour's government is pursuing a programme to deliver 14,000 additional places by 2031. In September, ministers announced that £110 million from existing budgets would be brought forward to accelerate construction and conversions within the prison estate.
The government has also changed release arrangements to manage immediate capacity pressures. The previous Conservative government introduced its own early-release scheme in 2023.
Phillipson's challenge puts delivery at the centre of the debate: whether the Conservatives can credibly promise a major expansion after years that left so little net growth in operational capacity.
