In which year were the Olympic games first held in London?

London hosted the Olympic Games in 1908, 1948 and 2012.

The 1908 Summer Olympics, officially the Games of the IV Olympiad, were an international multi-sport event which was held from 27 April to 31 October 1908. These games were originally scheduled to be held in Rome, but were re-located on financial grounds following a disastrous eruption of Mount Vesuvius in 1906.

They were the fourth chronological modern Olympic Games in keeping with the now-accepted four-year cycle as opposed to the proposed Intercalated Games alternate four-year cycle. Lasting a total of 187 days, or 6 months and 4 days, these games were the longest in modern Olympics history.

London is the only city in the United Kingdom to have ever hosted the Olympics; the United States is the only country to have hosted Summer Olympics on more occasions than the UK. Also, London is the only city to have bid more than once and still hold a 100% record.

British participation in Olympic events, both as a competitor and as a host, is the responsibility of the British Olympic Association.