London is a leading global city that excels in the arts, business, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism and transport. London, along with New York City, is the central Leading financial, and became the city's fifth largest GDP in the world, or the highest in Europe. The city is regarded as the cultural center of the world. London was also to be the most frequently visited, and listed as the city with the world's busiest airport by international passenger traffic. 43 London universities form the largest concentration of higher education in Europe. In 2012, London became the first city to have hosted the modern Summer Olympic Games three times.
London consists of diverse communities and cultures with more than 300 languages are spoken by various ethnic groups. In March 2011, London has a population recorded as 8,174,100 people, about 12.5% of the population of the United Kingdom as a whole. It This also makes London the largest city in the European Union by population. The Greater London Urban Area is also the second largest urban area (after Paris) in the European Union with a population of 8,278,251 inhabitants, while the metropolitan London is the largest in the EU with a population expected to reach 12 to 14 million people. Earlier, London was also a city with the largest population in the world in the period 1831-1925.