Joe Swift and Jo Whiley are back at the Royal Horticultural Society’s Hampton Court Palace Garden Festival – along with gardening experts Carol Klein, Adam Frost, Rachel de Thame, Arit Anderson, Frances Tophill and Mark Lane – where they will be revealing the winners of this year’s Best Show Garden and the Best Floral Exhibit. Rachel de Thame will be exploring a new rose garden, Frances Tophill reveals how to grow fruit and veg in small spaces, and Adam Frost takes a look round the RHS Back to Nature garden, co-designed by the Duchess of Cambridge.