Britain's biggest bookmaker, which has more than 3,400 betting shops, said UK retail net gaming revenues dropped 19 per cent in its second quarter to 30 June.
This was driven by a 39 per cent plunge in UK like-for-like machine sales following the UK government's move to slash the maximum stake on fixed-odds betting terminals (FOBTs) to £2 in April.
But the firm said the UK hit was not as bad as feared, while a surge in online revenues and international business helped offset the betting shop woes to leave overall net gaming revenues 3 per cent higher in the quarter and 5 per cent up in the first half.
Chief executive Kenneth Alexander said: "The transition to a post-£2 stakes-cut environment in UK retail is progressing very well and we believe the Ladbrokes Coral estate is best placed to take market share."
Bookmakers have been hammered by the FOBT crackdown, which has been compounded by challenging high street conditions.
William Hill announced earlier this month that it was axing around 700 betting shops across the UK, putting 4,500 jobs at risk.
GVC has previously said up to 1,000 of its bookies are at risk of closure due to the stake cut.
In its trading update, GVC confirmed the boost from online gambling, with website net gaming revenues up 16 per cent in the second quarter and 17 per cent over the first half despite a strong performance a year earlier from the football world cup.
UK online sales jumped 19 per centi in the second quarter, it added. European net gaming revenues were also a bright spot, up 12 per cent.