Greedy Frankie Dettori says he’s embarrassed to be bankrupt – given what experts tell me about his ‘beyond stupid’ tax avoidance scheme, he certainly should be, writes IAN HERBERT

When the starter raises the tape for the Grand National on Saturday afternoon, Frankie Dettori will be in the thick of the action out at the Dubai World Cup, including the world’s richest horse race which he won 25 years ago in a pulverising performance which remains that chase’s most unforgettable. One tour operator has…