The three groups are to run a debate called Beyond 2012, which will take place at the BFI Imax cinema in London on 19 September.
Panellists lined up to speak are Clive Little, director of events and programming at the Olympic Park Legacy Company, Iain Edmondson, head of major events at London & Partners, and Dan Ritterband, director of marketing and 2012 communications at the Greater London Authority. The event will be moderated by Davies Tanner managing director Robert Wright.
Moya Maxwell, UVL acting chairman and head of commercial programming at the Royal Opera House, said: "With 73 venues we feel it is important as an organisation to facilitate workshops and events which resonate with our members.
"As such, Beyond 2012 allows us to look at opportunities for the present and future for events spaces in the capital and the city as a whole."