The culmination of the Saving Planet Earth season comes from the Royal Botanic Gardens in Kew, London. Hosted by Alan Titchmarsh with Graham Norton, this fundraising spectacular includes musical performances from Natasha Bedingfield, Beverley Knight, Manic Street Preachers and others, plus special guests including Sir David Attenborough and Rolf Harris. There's also a quiz, celebrities running a marathon in Kenya and links to some of the conservation projects from Saving Planet Earth. Show less