Smyle is one of less than ten agencies in the EMEA region that have secured a place on Intercontinental's preferred supplier roster for internal events.
The roster, thought to be worth several million pounds, is currently being finalised.
Smyle has worked with Intercontinental over the past two years on events including a global managers' conference and a sales conference, in association with Aston Martin.
Smyle commercial director Rick Stainton said: "It's great news. We don't yet know which other agencies are on the roster but to be one of such a small number serving Intercontinental across EMEA is a great honour."