GMAC was made possible through the use of a Home Office (HO) NIM implementation grant, with the key project work in 2003 / early 2004 involved the recruitment and training of 14 new Strategic Analytical Partnership Coordinators, the networking of analytical GMP machines into all ten local authorities and the establishment of a multi-agency data-hub.
The project attracted national attention, and many references to GMAC originate from several inspections and assessments of the work around this time. A Home Office evaluation of selected GIS-based information sharing systems spoke highly of the GMAC Partnership Business Model (PBM), and the Home Office White Paper 'Building Communities, Beating Crime' referred to it as a 'complete system for partnership working', with the project seen to complement Government legislation and policy at this time - including the Police Justice Bill, Crime and Disorder Act Review, Local Area Agreements and localised delivery of public service.
In 2009 Governance Arrangements for the GMAC Central Team were confirmed as TMPPO (Team Manchester Public Protection Officers Group) as part of the Public Protection Commission. More information is available on the Governance Arrangements page.

The support of the GMAC model is funded entirely through partner contributions, with each contributing a similar amount. This includes the ten Local Authorities, the GM Primary Care Trusts, Greater Manchester Fire and Rescue Service, Greater Manchester Police, Greater Manchester Passenger Transport Executive, Greater Manchester Probation Trust, Greater Manchester Victim Witness Support Service and Greater Manchester Police Authority.
Amongst other benefits, contributions from partners within Greater Manchester enable the development and maintenance of IT systems, the employment of strategic analysts both locally and centrally, continuing professional development for both and analytical and community safety practitioners, and the support provided by a GMAC Central Team.