Police forces could save £172 million a year through joint purchasing, according to the Labour Party.
An interim report from the opposition’s “zero-based review” of spending has identified £250 million of police force savings, which it claimed could eliminate the need to cut 1,100 jobs in 2015-16.
The review goes further, suggesting procurement savings could reach £301 million to £430 million by 2017.
The party said national collaborative procurement would be mandatory for forces, and savings would be used to support budgets and protect jobs.
"Policing needs to reform, as Lord Stevens independent review set out last year. But Theresa May is completely failing to work with the police to get basic savings on things like procurement,” said shadow home secretary Yvette Cooper.
“Instead she is fragmenting the police, making it harder to get efficiency savings in place, and wasting tens of millions on elections for police and crime commissioners that no one wants. It is bad management, bad policy, and our communities can’t afford five more years of this.”
In addition to the savings made through procurement, the party said £50 million could be saved by scrapping police and crime commissioners, £17.2 million could be raised by recouping the cost of gun licensing and £9 million recovering the cost of driver offender retraining.
The zero-based review was described as a “root and branch review of every pound the government spends from the bottom up”.