I arrived last week from the UK. People bang on about "you'll need an exit ticket". In my experience no you don't. I was not questioned at all, went straight through boarder control/immigration no questions. Maybe coming from a country presided over by the complete egotistical lunatic Trump is different to leaving the UK governed by the total skid mark lefty British hating totally hapless Starmer. If you are worried buy a $20 Malay Bus ticket to Kuala Lumpur from Hat Yai