BANGALORE, May 12 (Reuters) - ** British package holiday group On the Beach OTB.L plunges 15.8% to 142.8p, lowest since Oct 2024
** Top loser on FTSE All Share .FTAS, which is down 1%
** OTB expects adjusted pretax profit of 18-25 mln pounds for the year ending Sept 30 vs company-compiled poll of analyst estimates of 38.5-42 mln pounds
** Had earlier suspended outlook due to booking slowdown from Iran war impact
** Stock rated "buy" on avg by 7 analysts, one "hold"; median PT 305p - LSEG-compiled data
** YTD, as of last close, OTB down nearly 26% vs .FTAS 9% drop
(Reporting by Amna Mariyam)
((amna.mariyam@thomsonreuters.com))