I'm wracking the old braincells for where I heard/found out, but the first online thing may well have been back when these organisations were based out of Gibralter (was to avoid UK taxation laws I think), possibly the second one was out of there too, could explain the lack of transparency?
I think he made his first fortune selling an online betting website he'd devised/designed to one of the big boys, then I think he did something similar again. After that I understand it was property develpment in the UK (Sussex) and a lot of property develpment in Australia. The poker playing is...