According to the UK Sunday Times Rich List, the owners of bet365, Peter and Denise Coates, have nearly doubled their worth going from GBP 1.15 billion to GBP 2.35 billion.
The father and daughter team went from 78th on the list of the UK’s wealthiest to 44th in 2015.
The Rational Group-PokerStars owner, Mark Scheinberg, topped them at GBP 2.76 billion and Betdaq founder Dermot Desmond also made the list with a fortune of GBP 1.47 billion.
Other gambling powerhouses to appear on the wealthiest list include Fred and Peter Done of Betfred, BetVictor owner Michael Tabor, David Power of Paddy Power and Betfair founders Ed Wrayand Andrew Black.
In total, there are 117 billionaires on the 2015 list, which is an increase of 104 compared to 2014.
If you’re registered online, you may view the Rich List in its entirety here.