<sod >GVC Holdings, which owns Ladbrokes Coral, slumped more than 6 per cent, Paddy Power Betfair was down 3.4 per cent and William Hill plummeted 14Â per cent in morning trading.< eod>< sod > GVC Holdings, which owns Ladbrokes Coral, slumped more than 6 per cent, Paddy Power Betfair was down almost 5Â per cent and William Hill plummeted 12.7Â per centÂ on the day.< eod>