The exhibition, which has been held at Wembley Stadium since 2009, will now remain at the venue until 2014.
The most recent exhibition was in March and attracted more than 120 exhibitors and 700 key decision makers and buyers from more than 20 sports.
Jeremy Storey Walker, event director for SMEXX said: "As Wembley Stadium is the home of national football it is the natural choice of venue for our event. It provides the flexible spaces we need and is well equipped to meet the exhibitions requirements."
Jackie Boughton, head of sales for conference and banqueting from DNC Wembley added: "SMMEX’s decision to bring the annual exhibition back to Wembley for another two years is recognition of the team’s hard work in making events at the stadium a success and we look forward to welcoming them back for future shows."
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