The company said today it was replacing Danny Breithaupt with Andy McCue, who stepped down form his role of chief operating officer of Paddy Power earlier this year.
McCue had held the role of chief executive at the bookies until the completion of its merger with Betfair in February this year.
"Andy is a proven listed company chief executive, having recently held that role at Paddy Power plc, where he embedded a new growth strategy which delivered record revenues and profits, as well as playing a pivotal role in the merger with Betfair plc," said Restuarant Group today.
"Prior to that, he led the Paddy Power UK and Irish retail businesses, having transformed the profitability of the UK business and overseen its development over eight years."
Chairman Debbie Hewitt added: "Danny has provided strong operational leadership over the years. He has fully participated in the review of our operating strategy in a professional, conscientious and thorough way.
"We have agreed that this is an appropriate point for him to handover to a new leader who will implement the initial actions and set the priorities for this next phase of development for the business. We wish him well for the future."