The findings are the result of an independent study by Grant Thornton and do not include the role the venue played during the 2012 Olympic and Paralympic Games.
James Rees, executive director, ExCeL London, said: "Opening the ICC at ExCeL was the right decision, not only for us but for London. In 2008, with the endorsement of the Mayor of London Boris Johnson, we committed to build and open London’s first truly International Convention Centre. At the time, London was 19th in the ICCA rankings but we strongly recognised the economic benefit that hosting more ICCA-rated events and large-scale corporate conventions would bring to the capital. With the support of our owners ADNEC, the new £165m ICC was opened in May 2010 and allowed London to bid for and host major international congresses and events for the first time."
He added that holding large-scale events had a positive effect on london overall, with smaller events being hosted in hotels, universities and other boutique venues around the city.
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