UKinbound's members rely on the EU for almost half of their business, with 27% of its members' workforce made up of EU migrants, according to a recent survey.
The travel and tourism trade association, which represents 350 members, said the survey revealed that 46% of its members' inbound business hails from EU markets.
The survey was prompted by findings from UKinbound's first Business Barometer of the Year report, which revealed that 82% of members believe that staying in the European Union is important for their business.
The association said this latest survey provides further evidence of the "overwhelming support" for Britain to remain in the EU.
UKinbound's CEO Deirdre Wells said: "Our most recent survey demonstrates how important the EU is as a key source market for our businesses. It has also exposed that 27% of our members' workforces are made up of EU migrants.
Pointing to the use of UKinbound's Business Barometer findings during a recent House of Lords Question Time on the impact of withdrawal from the EU on the tourism and hospitality industries, Wells said: "Now that the referendum campaign is well under way, it is good to see our parliamentarians recognising the negative impact that a Brexit would have on tourism."
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