the ex-wife of a professional gambler and racehorse trainer has launched a bid for a bigger slice of his legacy , claiming he avoided a huge tax bill by dying .
when he died , aged 73 , he owned a seven-bedroom country estate in surrey which had been valued at £ 4.25 million .
but before he died , he and his second wife penny ann davison , 59 , fought a bitter battle through the divorce courts for four years over his fortune , before she was awarded just £ 750,000 .