Nicki Chapman and Andy Sturgeon celebrate the people behind the scenes that make Chelsea one of the greatest flower shows in the horticultural world. There's a tribute to the young generation of gardeners and designers cutting their teeth at the show for the first time. And Andy talks to designers Jane Owen and Ann-Marie Powell, who have chosen to highlight the plight of our tropical rain forests by building one in the Royal Hospital grounds - with help from a group of ladies from Cameroon.