Sir David Attenborough took to the stage at Glastonbury this weekend to thank festival-goers for cutting their plastic use. Click here to watch the video.

The naturalist appeared shortly before Kylie Minogue's set, and previewed some of his new TV series Seven Worlds, One Planet, which is due to air on BBC One later this year.

Thousands of people had gathered for his unscheduled appearance.

"That is more than a million bottles of water that have not been drunk by you," he told the audience to huge cheers.

"Thank you. Thank you."

The presenter appeared to be overwhelmed by the size of the crowd - re-starting his speech twice after he was drowned out by applause.