RTÉ's Six One presenter Sharon Tobin is set to swap co-hosting the flagship show to move to radio. Sharon Tobin and Tommy Meskill in the RTÉ News studioSharon told RSVP Live: 'Next week I’m going to be on Radio 1 for a week, filling in for David McCullagh. David McCullagh and Sharon Tobin on their final Six One together. Pic: Sharon Tobin / InstagramSharon replaced Caitríona Perry, who left the national broadcaster to join the BBC in the States, where she has been a hit with viewers. Dyane Connor, Siobhan Bastible, Sharon Tobin and Claire Brock pictured at the Platinum VIP Style Awards 2026 at the InterContinental Dublin.