The results provide an estimate of the market's value in terms of direct revenue to event venues, and are widely used to inform investment, advocacy and marketing activities.
Last year's research estimated the sector was worth around £7.2bn, down from £8bn the year before.
The survey questionnaire is available online at the Eventia website and also as a Word document and will remain open until 2 April. The report will be published in June 2010.
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