Time in London, United Kingdom:

London (pronounced /ˈlʌndən/) is the capital of England and the United Kingdom. It is the UK/'s largest and most populous metropolitan area and the largest urban zone in the European Union by most measures.
A major settlement for two millennia, its history goes back to its founding by the Romans, who called it Londinium.^[6] London/'s core, the ancient City of London, the 'square mile', retains its mediaeval boundaries. Since at least the nineteenth century, the name "London" has also referred to the metropolis developed around it.^[7] Today, the bulk of this conurbation forms the London region^[8] and the Greater London administrative area,^[9] with its own elected mayor and assembly.^[10]
London is a leading global city and one of the world/'s largest financial centres^{[11][12][13][14]} with the largest city GDP in Europe.^[15] Central London is home to the headquarters of most of the UK/'s top 100 listed companies (the FTSE 100) and more than 100 of Europe/'s 500 largest. London/'s influence in politics, finance, education, entertainment, media, fashion, the arts and culture in general contributes to its global position. It is a major tourist destination for both domestic and overseas visitors. London hosted the 1908 and 1948 Summer Olympics and will host the 2012 Summer Olympics.^[16] London contains four World Heritage Sites: the Tower of London; the historic settlement of Greenwich; the Royal Botanic Gardens, Kew; and the site comprising the Palace of Westminster, Westminster Abbey and St. Margaret/'s Church.^[17]
London has a diverse range of peoples, cultures, and religions, and more than 300 languages are spoken within its boundaries.^[18] In July 2007 it had an official population of 7,556,900 within the boundaries of Greater London,^[19] making it the most populous municipality in the European Union.^[20] The Greater London Urban Area (the second largest in the EU) has a population of 8,278,251.^[2] while the metropolitan area (the largest in the EU) has an estimated total population of between 12 million^[3] and 14 million.^[4] The London Underground network, administered by Transport for London, is the most extensive underground railway network in the world,^[21] London Heathrow Airport is the world/'s busiest airport by number of international passengers^[22] and the airspace is the busiest of any urban centre in the world.^[23]