** Thomas Cook, EasyJet Plc, TUI AG , International Consolidated Airlines Group SA and Ryanair Holdings shares down after Barclays publishes study on Britons preferring vacations within the UK
** A survey of 2,006 domestic tourists, conducted by Barclays, found that 31% are likely to spend more time on holiday in the UK this year
** TCG down 6.6%, EZJ edges down 1.8%, TUIGn falls 4.4%, RYA down 1.9%
** Survey found 18% are concerned over impact of Brexit on foreign travel, family finances when opting for a staycation
** TCG already issued its third profit warning in less than a year last week, citing weak demand, increased promotional activity and earlier discounting
** Several airlines have recently said that uncertainty around Brexit has contributed to a tougher environment (Reporting by Sangameswaran S in Bengaluru)
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