The venue said the figure is accounted for by new and repeat business generated in September for 2012 and beats its previous sales record of £800,000 in October 2009.
Business includes a series of events for M&S, an Investor's Day for bank Santander, Incisive Media's SES London Conference & Expo 2012 and The British Council's Going Global 2012 event.
Sue Etherington, Commercial Director said: "The sales team at The QEIICC has created these excellent results from working in partnership with clients and being flexible on the Centre's packages and facilities.
"2012 is going to be a great year for both The QEIICC and the events industry as a whole and we have some prestigious national and international events coming to London next year.
"The green shoots of recovery are definitely showing and we are taking bookings for events up to 2014."