North West Motorway Police Group
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The North West Motorway Police Group (NWMPG) provides a regionalised policing service for the Motorways within the Cheshire, Lancashire, Merseyside and Greater Manchester Police areas. It was established in June 2008 in partnership with the Highways Agency.
Operating from six bases around the region, NWMPG is made up of over 130 police officers and more than 30 support staff from the four forces. The group is responsible for patrolling a motorway network stretching from the borders with Cumbria in the north to West Mercia and Staffordshire to the south, as well as North Wales to the west and West Yorkshire to the east.
It has been modelled on the Central Motorway Police Group which started in 1990 when West Midlands Police and West Mercia Constabulary formed a partnership to provide a dedicated policing unit for the motorways surrounding Birmingham. CMPG now includes Staffordshire Police.. The CMPG as of 2018 is now a two force collaboration after Warwickshire and West Mercia withdrew from the group.
In April 2018, Lancashire Police announced their intention to withdraw from the NWMPG. 
The 24-hour Regional Command and Control Centre, located at the Highways Agency Regional Control Motorway Centre at Newton-le-Willows, will maintain contact with all police and Highways Agency staff deployed by their respective organisations across a total of more than 3,000 square miles (7,800 km2). 
Officers from the NWMPG patrol all or part of the following motorways:
NWMPG uses a fleet of more than 50 vehicles including high-powered saloon and estate cars, 4x4 vehicles, and a number of fully equipped plain vehicles.
- https://web.archive.org/web/20120215054220/http://www.lancashire.police.uk/index.php?id=4469. Archived from the original on February 15, 2012. Retrieved November 22, 2008. Missing or empty
- "Merseyside Police: About Us: Departments". Merseyside.police.uk. Archived from the original on July 29, 2008. Retrieved 2009-06-09.
- "Lancashire Police withdraws from North West Motorway Police Group | UK Police News - Police Oracle". www.policeoracle.com. Retrieved 2018-05-23.
- "Highways Agency - New Era for Motorway Policing in the North West". Highways.gov.uk. Retrieved 2009-06-09.