** Shares of British rail ticketing co Trainline TRNT.L down 7.4% to 221.8p
** Stock top loser on the FTSE midcaps .FTMC index, which is up 0.8%
** Co expects revenue between 440 million and 455 million pounds ($618.35 million) in 2027, compared with company-compiled analyst estimate of 453 million pounds on ticket sales of 6.42 billion pounds
** TRNT says effects of geopolitical tensions in the Middle East on inbound air traffic into Europe weighing on foreign travel sales
** Main drivers of revenue decline forecast for FY27 are regulated fare freezes alongside potential pressure on tourism linked to the Middle East war, Peel Hunt analysts say in a note
** Including session's moves, stock up ~9% YTD
($1 = 0.7358 pounds)
(Reporting by Megha Anilkumar Nair)
((MeghaAnilkumar.Nair@thomsonreuters.com;))