Cleveland Police Authority is extending the remit of a ten-year services deal with Steria, originally signed last October and now totalling £175 million.
The extension of the "shared services partnership" will deliver "additional savings in excess of £9 million", said Cleveland Police Authority.
As the extension was signed, Steria officially opened a new Shared Services Centre in Stockton, Teesside, which will house the police force's finance, HR, procurement, fleet, and facilities functions.
A number of additional support services will be delivered alongside those undertaken by Steria at the start of the ten-year contract in October 2010.
Effective from 1st July 2011, Steria's remit will now include centralising crime management units in each of the four force districts and merging with the control room, as well as developing a newly combined risk and operational planning unit that will handle emergency and event planning, together with risk assessment and safety.
These additional services will enable officers to devote more time to operational policing, through "significantly reduced paperwork", said Cleveland Police Authority. It has not been revealed how much the extra work will cost the Authority.
Under the overall partnership agreement, Steria is working with the force and Authority to deliver key services, including the control room, support for the preparation of criminal case files, and shared business services covering finance, HR, payroll, procurement, fleet management and facilities functions.
Peter Race, chair of Cleveland Police Authority, said: "When we embarked on the partnership with Steria we set ourselves the key objectives of delivering better services to the public, and generating £50 million savings over ten years and maintaining a strong front-line service.
"The benefits generated by this partnership have helped us weather the pressures so far and this latest development will help us extend the benefits even further."
At the end of 2008 Cleveland Police also signed a £7.9 million deal with Steria for mobile working solutions across the entire force of 1,400 officers.