London bid for the 2012 Summer Olympics being selected by the International Olympic Committee (IOC) when put up against other world cities in a competitive bidding process. On 6 July 2005 at its 117th Session in Singapore, the IOC awarded London the right to host the Games of the XXX Olympiad. The city beat the favourite Paris 54 to 50 on the fourth and final ballot. London is the first city to host the Games three times. At the time of the bid, the budget projection was around £2 billion, but it was later estimated that the true cost would be around £9 billion. The project involved
Doping at the Olympic Games provisional suspensions upon Vardanyan, who remains provisionally suspended until his case is closed. On 12 January 2017, the IOC disqualified Vardanyan. Through 6 October 2016, the IOC had reported Adverse Analytical Findings for 23 weightlifters from its 2016 retests of samples from the 2012 London Olympic Games, all of whom tested positive for anabolic agents. On 11 October 2016, Tatyana Lysenko of the Russian Federation was disqualified from the women's hammer throw, in which she won the gold medal. She had tested positive for a banned substance. The IOC requested the IAAF to modify the results of this event accordingly.