Merseyside Police | 15,567 followers on LinkedIn. Merseyside Police was formed in 1974 and serves a population of around 1.5 million people, covering an area of 647 square kilometres. We currently employ over 7,000 people in a variety of roles including Police Officers, Police Community Support Officers, Police Support Staff, Special Police Officers and Volunteers. Merseyside Police is split into five Basic Command Units - Wirral, Sefton, Knowsley, St Helens and Liverpool.