You can tell this is a scam just from his claims, they're ridiculous, liquidity is an issue in the Australian market. Dr Nick stopped betting fixed odds on Australian Racing yet this guy can win tens of millions a year and no one has ever heard of him. Even if he's going to say he's betting on UK racing on betfair you'd cannibalize your odds betting so large so there's no reason taking on investors just place the bets yourself and print.