An official online partnership with the Mexican state lottery means WinTrillions now offers up to seven millionaire raffles from Mexico, paying out around us$ 3.5 million in prizes each week.
Lucy Gold, spokesperson for WinTrillions, said: "We put a lot of work into the relaunch of the UK site, supported by a targeted TV advertising campaign, but we never expected such rapid growth.
"The introduction of the Mexican Lotería Nacional has been particularly successful and sales have also been driven by massive rollover jackpots on Mega Millions and Powerball in the USA, which are both part of our popular Power Combo Syndicate," added Gold.