Monty Don and Joe Swift launch BBC2's week of celebrations at this year's RHS Chelsea Flower Show. They have full coverage of Her Majesty the Queen's annual visit and a look forward to the medals hand out as the team predict the designers they think will scoop the top prizes. Monty and Joe also chat to actor Benedict Cumberbatch and his mother, the actress Wanda Ventham, as they share their favourite Chelsea moments. Show less