RHS Show Tatton Park

It's show time, as the RHS hosts its twelfth flower show from Cheshire's prestigious Tatton Park. Presenters Toby Buckland, Carol Klein and Joe Swift soak up the celebrations with a look at the northern show garden designers and floral marquee exhibitors that make the event unique. Toby meets controversial designer Tony Smith who has brought his own alien to Tatton this year. Cumbrian grower Chris Benson explains why his lace-cap hydrangeas have an exclusive outing to the event every year.