The Art of the United Kingdom refers to all forms of visual art in or associated with the United Kingdom since the formation of the Kingdom of Great Britain in 1707 and encompasses English art, Scottish art, Welsh art and Irish art, and forms part of Western art history. During the 18th century, Britain began to reclaim the leading place England had previously played in European art during the Middle Ages, being especially strong in portraiture and landscape art. Increased British prosperity at the time led to a greatly increased production of both fine art and the decorative arts, the latter often being exported. The Romantic period resulted from very diverse talents, including the painters William Blake, J. M. W. Turner, John Constable and Samuel Palmer. The Victorian period saw a great diversity of art, and a far bigger quantity created than before. Much Victorian art is now out of critical favour, with interest concentrated on the Pre-Raphaelites and the innovative movements at the end of the 18th century. The training of artists, which had long been neglected, began to improve in the 18th century through private and government initiatives, and greatly expanded in the 19th century. Public exhibitions and the later opening of museums brought art to a wider public, especially in London. In the 19th century publicly displayed religious art once again became popular after a virtual absence since the Reformation, and, as in other countries, movements such as the Pre-Raphaelite Brotherhood and the Glasgow School contended with established Academic art. The British contribution to early Modernist art was relatively small, but since World War II British artists have made a considerable impact on Contemporary art, especially with figurative work, and Britain remains a key centre of an increasingly globalized art world. Background The oldest surviving British art includes Stonehenge from around 2600 BC, and tin and gold works of art produced by the Beaker people from around 2150 BC. The La Tène style of Celtic art reached the British Isles rather late, no earlier than about 400 BC, and developed a particular "Insular Celtic" style seen in objects such as the Battersea Shield, and a number of bronze mirror-backs decorated with intricate patterns of curves, spirals and trumpet-shapes. Only in the British Isles can Celtic decorative style be seen to have survived throughout the Roman period, as shown in objects like the Staffordshire Moorlands Pan and the