States of Guernsey Police Service special constables carry out the duties of a traffic warden, but have certain police powers in respect of traffic control (For example traffic control around school areas at peak times). States of Guernsey Police Service The States of Guernsey Police Service, known generally as the Guernsey Police, is the Police service for the Bailiwick of Guernsey, a jurisdictional sub-group of Crown Dependencies within the Channel Islands. The Service's enforcement jurisdiction extends across the entire Bailiwick and encompasses the Islands of Guernsey, Alderney, Herm, and Sark. In common with many communities, a historical development of parish constables formed the system of
Bailiwick of Guernsey government. All three legal jurisdictions need Royal Assent from the Privy Council on its primary legislation. Each jurisdiction raises its own taxation, although in 1949 Alderney transferred its rights to Guernsey. The island of Guernsey has a population of around 63,000 in and forms the legal and administrative centre of the Bailiwick of Guernsey. The parliament of Guernsey and of the nearby inhabited islands of Herm, Jethou and Lihou is the States of Guernsey. With a population of around 1,900 in , Alderney has its own parliament, the States of Alderney, which has ten elected members and an elected president.