St Mary's (, meaning The Mainland) is the largest and most populous island of the Isles of Scilly, an archipelago off the southwest coast of Cornwall in England. Description St Mary's has an area of — 40 percent of the total land area of the Isles of Scilly — this includes four small tidal islands which connect with St Mary's at low tide: Toll's Island, Taylor's Island, Newford Island and the island at Innisidgen. With a population of 1,723 (out of a total population for Scilly of 2,203) St Mary's is relatively densely populated, with twice the average population density of the Isles of Scilly as a whole. The majority of St Mary's residents live in the western half of the island, with Hugh Town alone having a population of 1,097. The main settlement, Hugh Town (Cornish: Tre Huw), was sold to the inhabitants by the Crown in 1949 (it had belonged to the Duchy of Cornwall — which still owns much of the rest of the island). Other settlements on the island are Old Town, Porthloo, Pelistry, Trenoweth, Holy Vale, Maypole, Normandy, Longstone, Rocky Hill and Telegraph. The island became the home of British Prime Minister Harold Wilson and his final resting place after his death in 1995. His grave is at the cemetery at Old Town Church. Civil parish and ward St Mary's is one of the five civil parishes of the Isles of Scilly, which are also wards. St Mary's returns 12 councillors to the Council of the Isles of Scilly; this compares with 1 councillor for each of the four "off-island" wards. The civil parish is not functional however, and there is no council or meeting. Transport St Mary's is the only island of the Isles of Scilly with a significant road network and the only island with public highways, including three A roads (measuring in total length) which are numbered in Zone 3 of the British numbering scheme (the A3110, A3111 and A3112); these 'A' roads are generally country lanes in nature. Roads and streets across Scilly have very few signs or markings, and route numbers are not marked at all. In 2005 there were 619 cars and vans on St Mary's; the island also has taxis and a conducted bus tour. Vehicles in Scilly are exempt from annual MOT tests. By air, the island is served by St Mary's Airport. Fixed-wing aircraft services are