Bailiwick of Guernsey history of the Bailiwick of Guernsey goes back to 933, when the islands came under the control of William Longsword, having been annexed from the Duchy of Brittany by the Duchy of Normandy. The island of Guernsey and the other Channel Islands formed part of the lands of William the Conqueror. In 1204 France conquered mainland Normandy – but not the offshore islands of the bailiwick. The islands represent the last remnants of the medieval Duchy of Normandy. Initially there was one governor, or co-governors working together, of the islands making up the Channel Islands. The title "Governor" has changed
Law of Guernsey relating to rubbish collection and data protection laws. Certain laws affecting Guernsey can be imposed on Guernsey by the United Kingdom government and are registered as Guernsey laws to extend them to the Bailiwick. Examples include the Landmines Act 1998 ( becoming the Landmines Act 1998 (Guernsey) Order 2000) and the Police Act 1997. There have been many cases in history of Guernsey simply not registering Parliamentary laws which has the effect of nullifying them. Convention requires Parliamentary laws to (a) not go beyond the prerogative powers over the Islands and (b) should be consonant with aspects of modern law.