For centuries people have migrated to the British Isles from many parts of the world, some to avoid political or religious persecution, others to find a better way of life or to escape poverty. In historic times migrants from the European mainland joined the indigenous population of Britain during the Roman Empire and during the invasions of the Anglo-Saxons, Danes, and Normans. The Irish have long made homes in Great Britain. Many Jews arrived in Britain toward the end of the 19th century and in the 1930s. After 1945 large numbers of other European refugees settled in the country. The large immigrant communities from the West Indies and South Asia date from the 1950s and '60s. There are also substantial groups of Americans, Australians, and Chinese, as well as various other Europeans, such as Greeks, Russians, Poles, Serbs, Estonians, Latvians, Armenians, Turkish Cypriots, Italians, and Spaniards. Since the early 1970s Ugandan Asians and immigrants from Latin America, Southeast Asia, and Sri Lanka have sought refuge in Britain. People of Indian, Pakistani, and Bangladeshi origin account for more than half of the total ethnic minority population.
All the traditional languages spoken in the United Kingdom ultimately derive from a common Indo-European origin, a tongue so ancient that, over the millennia, it has split into a variety of languages, each with its own peculiarities in sounds, grammar, and vocabulary. The distinct languages in what became the United Kingdom originated when languages from the Continent developed independently in the British Isles, cut off from regular communication with their parent languages.
