The wins will be worth an estimated £50m to the local economy from delegate spend, plus a further £50m of benefit from pending contracts.
ICC London Excel officially opens in May, and has confirmed event bookings up until 2015.
The venue's expansion will bring an estimated £1.6bn in economic benefit to London by 2011.
Events booked at the venue include the European Conference on Optical Communications in 2013 and the European Federation of National Associations of Orthopaedics and Traumatology in 2014.
Excel London director of conferences and events James Rees said: "The sheer number and quality of events that ICC London Excel is attracting clearly illustrates why London and indeed the industry as a whole has needed an international convention centre."