The flag of Guernsey was adopted in 1985 and consists of the red cross of St. George with an additional gold cross within it. The change was prompted by confusion at international sporting events over competitors from Guernsey and England using the same flag. It was designed by the Guernsey Flag Investigation Committee chaired by the then Deputy Bailiff Graham Dorey and first flew in the island on 15 February 1985. The gold cross represents Duke William of Normandy, who, it is claimed, had such a cross on his flag in the Battle of Hastings, given to him by Pope Alexander II. A red ensign with the cross in the fly is used as civil ensign.
The previous flag of Guernsey was the St George's Cross. Guernsey was permitted to use it in 1936 for its state flag. However, there is evidence to suggest the existence of a previous Guernsey flag, used in the mid-19th century. This was a St George's cross on a blue-and-white chequered field, with the Union Flag in canton. Further details of its use and official status remain doubtful, however.