Volunteers Clean Up River Lea Tributary In Enfield

LONDON, ENGLAND - JUNE 03: Engagement manager and conservationist Sam Bentley-Toon helps remove Himalayan Balsam during a river cleanup, organised by the waterway advocacy group Thames21, on June 03, 2021 in London, England. The event, in partnership with Enfield Council, invited volunteers to help remove litter and invasive plants such as Himalayan Balsam, on a stretch of Salmons Brook, a minor tributary of the River Lea in North London. The group aims to help restore habitat and re-wild stretches of the many waterways that run in and around the capital. (Photo by Dan Kitwood/Getty Images)