Nearly three-quarters of Britons engaged in gambling last year, a survey has concluded.
The survey of 7,756 people done for the Gambling Commission found the amount of betting has increased to levels last seen in the late 1990s.
The proportion of what the regulator calls "problem gamblers" has also increased.
The report estimates that 451,000 people have issues with betting, a rise on previous surveys in 2007 and 1999.
Nearly three-quarters of adults - 73% have gambled. The vast majority of people told the survey authors they did it "because it's fun" and because there was a "chance of winning big money".
People in Great Britain are gambling in a wide range of ways, they discovered, but the analysts found that only a relatively small proportion of gaming was happening online.
The most popular way of having a flutter continues to be the National Lottery, with nearly 60% of UK adults buying a ticket last year.
By contrast, the report found football pools have dropped massively in popularity over the last decade, from 9% of the population predicting score and no-score draws in 1999 to just 4% in 2010.
Gambling Commission chairman Brian Pomeroy said that a "small but probably growing" proportion of the British population has serious problems with gambling.
He said it reinforced the commission's determination to regulate gambling to "minimise the risk to those individuals and to ensure that the majority of people can continue to gamble safely".
Here at Greengates Builders Merchants Accrington, Lancashire we were shocked to see how many people gamble and how serious a problem it has become.