Evan Davis is joined by a panel of top business guests to discuss private equity - the investors who have endured boom and bust like no other. He also finds out if English is the only real language of business. Evan is joined by Keith Clarke, chief executive of Atkins, one of the world's largest civil engineering and design consultancies, Laura Tenison, founder and managing director of Jo-Jo Maman Bebe, a clothing company for babies, toddlers and expectant mothers, and Peter Taylor, managing partner of the private equity firm Duke Street.