 Complete the following phrase:  Great Britain and Northern Ireland, represented by the British Olympic Association BOA, competed at the 2012 Summer Olympics in London, United Kingdom, from 27 July to 12 August 2012 as the host nation and the team of selected athletes was officially known as Team GB. British athletes have competed at every Summer Olympic Games in the modern era, alongside Australia, France and Greece, though Great Britain is the only one to have won at least one gold medal at all of them. London is the first city to host the Summer Olympics on three different occasions, having previously done so in 1908 and 1948. Soon, it will be joined by Paris in 2024 and Los Angeles in 