Trading places - dentistry to open ditches — Sam Waley-Cohen is an amateur jockey who swaps his suit running a dental business for racing silks at the weekends. Alan Crowhurst/Getty Images Trading places - dentistry to open ditches — Waley-Cohen will be in the orange and brown colors of his father Robert when he takes to the start for the Britain's Grand National race. Ian MacNicol/Getty Images Trading places - dentistry to open ditches — Away from the racecourse, he was credited with getting Prince William and Kate Middleton back together after a breakup. Trading places - dentistry to open ditches — Waley-Cohen attended the 2011 royal wedding with Annabel Ballin. The Duchess of Cambridge was a guest when they married later that year. Jasper Juinen/Getty Images/file Trading places - dentistry to open ditches — He likens riding in the Grand National, the most prestigious steeplechase in the world, to being a fighter pilot. Alan Crowhurst/ Getty Images Trading places - dentistry to open ditches — Waley-Cohen is no stranger to victory on Long Run, his mount on Saturday. Here he celebrates winning the 2011 Cheltenham Gold Cup. Alan Crowhurst/ Getty Images Trading places - dentistry to open ditches — That same year, he came close to Grand National victory on Oscar Time, but had to make do with second place behind Ballabriggs. Alex Livesey/Getty Images Trading places - dentistry to open ditches — He credits his victories to his father (pictured right), who owns the horses that he rides. Alan Crowhurst/Getty Images Prev Next