Hi Goldfinger,
Virgin Casino runs one the Wagerworks platform.
Wagerworks belongs to IGT -one of the largest land based slot machines manufacturers- and as such gets unmatched access to hugely successful land based slot machines licenses, such as Elvis, Monopoly, Cluedo, Cleopatra, the 50,000 Pyramid, and the recently released Megajackpots progressive, starting at £1,500,000.
Their website: http://www.wagerworks.com
Cheers 