Labour 'has seriously underestimated costs'published at 13:27 British Summer Time 2 May 2017
The World at One
BBC Radio 4
The BBC's home affairs correspondent Danny Shaw has been looking at the policing figures for the BBC's World At One.
He says England and Wales are 20,000 officers down on 2010 because of funding cuts and limits placed on how much local authorities can raise their council tax.
The Conservatives have pointed out that the number of police in frontline roles has gone up, but there will be fluctuations across forces, says Danny Shaw.
He says Labour want to bring in 10,000 extra police officers, at a cost of £300m a year.
"I think Labour has seriously underestimated costs," he goes on, pointing out the costing does not include uniform and equipment such as Tasers, or recruitment and training costs.