In 2014 the net increase was 318,000: immigration was 641,000, up from 526,000 in 2013, while the number of people emigrating (for more than 12 months) was 323,000. One of the more recent trends in migration has been the arrival of workers from the new EU member states in Eastern Europe, known as the A8 countries. In 2011, citizens of the new EU member states made up 13 per cent of the immigrants entering the country. Citizens of the European Union, including those of the UK, have the right to live and work in any EU member state. The UK applied temporary restrictions to citizens of Romania and Bulgaria, which joined the EU in January 2007. Research conducted by the Migration Policy Institute for the Equality and Human Rights Commission suggests that, between May 2004 and September 2009, 1.5 million workers migrated from the new EU member states to the UK, two-thirds of them Polish, but that many subsequently returned home, resulting in a net increase in the number of nationals of the new member states in the UK of some 700,000 over that period. The late-2000s recession in the UK reduced the economic incentive for Poles to migrate to the UK, the migration becoming temporary and circular. In 2009, for the first time since enlargement, more nationals of the eight central and eastern European states that had joined the EU in 2004 left the UK than arrived. In 2010, there were 7.0 million foreign-born residents in the UK, corresponding to 11.3 per cent of the total population. Of these, 4.76 million (7.7 per cent) were born outside the EU and 2.24 million (3.6 per cent) were born in another EU Member State. The proportion of foreign-born people in the UK remains slightly below that of many other European countries.
England and Scotland were leading centres of the Scientific Revolution from the 17th century. The United Kingdom led the Industrial Revolution from the 18th century, and has continued to produce scientists and engineers credited with important advances. Major theorists from the 17th and 18th centuries include Isaac Newton, whose laws of motion and illumination of gravity have been seen as a keystone of modern science; from the 19th century Charles Darwin, whose theory of evolution by natural selection was fundamental to the development of modern biology, and James Clerk Maxwell, who formulated classical electromagnetic theory; and more recently Stephen Hawking, who advanced major theories in the fields of cosmology, quantum gravity and the investigation of black holes.
More InfoThe UK has a railway network of 10,072 miles (16,209 km) in Great Britain and 189 miles (304 km) in Northern Ireland. Railways in Northern Ireland are operated by NI Railways, a subsidiary of state-owned Translink. In Great Britain, the British Rail network was privatised between 1994 and 1997, which was followed by a rapid rise in passenger numbers following years of decline, although the factors behind this are disputed. The UK was ranked eighth among national European rail systems in the 2017 European Railway Performance Index assessing intensity of use, quality of service and safety. Network Rail owns and manages most of the fixed assets (tracks, signals etc.). Around twenty, mostly privately owned, train operating companies operate passenger trains. In 2015, 1.68 billion passengers were carried. There are about 1,000 freight trains in daily operation. HS2, a new high-speed railway line, is estimated to cost £56 billion. Crossrail, under construction in London, is Europe's largest construction project with a £15 billion projected cost.
More InfoEngland and Scotland were leading centres of the Scientific Revolution from the 17th century. The United Kingdom led the Industrial Revolution from the 18th century, and has continued to produce scientists and engineers credited with important advances. Major theorists from the 17th and 18th centuries include Isaac Newton, whose laws of motion and illumination of gravity have been seen as a keystone of modern science; from the 19th century Charles Darwin, whose theory of evolution by natural selection was fundamental to the development of modern biology, and James Clerk Maxwell, who formulated classical electromagnetic theory; and more recently Stephen Hawking, who advanced major theories in the fields of cosmology, quantum gravity and the investigation of black holes.
More InfoIn 2017 the average total fertility rate (TFR) across the UK was 1.74 children born per woman. While a rising birth rate is contributing to population growth, it remains considerably below the baby boom peak of 2.95 children per woman in 1964, or the high of 6.02 children born per woman in 1815, below the replacement rate of 2.1, but higher than the 2001 record low of 1.63. In 2011, 47.3 per cent of births in the UK were to unmarried women. The Office for National Statistics published a bulletin in 2015 showing that, out of the UK population aged 16 and over, 1.7 per cent identify as lesbian, gay, or bisexual (2.0 per cent of males and 1.5 per cent of females); 4.5 per cent of respondents responded with "other", "I don't know", or did not respond. In 2018 the median age of the UK population was 41.7 years.
More InfoAccess to improved water supply and sanitation in the UK is universal. It is estimated that 96.7 per cent of households are connected to the sewer network. According to the Environment Agency, total water abstraction for public water supply in the UK was 16,406 megalitres per day in 2007. Drinking water standards and wastewater discharge standards in the UK, as in other countries of the European Union, were formerly determined by the EU when the UK was a member state (see Water supply and sanitation in the European Union).
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