G4S is the biggest global security company in the world.
In the UK, it has a £1bn turnover and employs more than 40,000 people, including staff at five prisons, three secure training centres and two immigration removal centres.
The company is also responsible for electronically monitoring offenders and transporting asylum claimants.
The contract with Lincolnshire Police significantly extends G4S's reach into policing.
But it's not alone: the private firm Steria has a £175m contract with Cleveland Police and the Avon and Somerset force has out-sourced much of its back-office functions in a partnership with IBM.
Other constabularies are involved in similar, smaller-scale projects with the private sector - and more are certain to follow.
http://www.bbc.co.uk/news/uk-england-lincolnshire-17119617