This was achieved despite last year’s reporting period including the final stages of the UEFA Euro 2016 football tournament.
Daily NGR in the three months to the end of September was up 10% year-on-year to €2.65mln, or up 13% on a constant currency basis.
Underlying NGR, which strips out the impact of Euro 2016 and the contribution from Kalixa (disposed of in May 2017), increased 18%, or 21% in constant currency.
The fourth quarter is just over a week old but the company said it has got off to a fast start.
"Underlying growth in Q3 represents the highest rate achieved since the acquisition of bwin.party in February 2016,” said Kenneth Alexander, chief executive of GVC.
“The quick wins made in 2016 have been supplemented by further and continuous improvements across all areas of the business. GVC operates in an industry with significant opportunities and challenges. The combination of our talented employees, proven technology and strong brands, gives me confidence that we can continue to drive shareholder value," he added.
The shares came out of the traps fast, rising 2% to 884.5p in the first hour of trading.