Overview: Matt Baker and Ellie Harrison are in the Lee Valley, the green lung of London. Ellie takes to the water to see what is being done to clean up its chalk streams.
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First Air Date: Jul 24, 1988Last Air date: Aug 06, 2023Season: 36 SeasonEpisode: 1658 EpisodeRuntime: 60 minutesQuality: HDIMDb: 3.90 / 10 by 5 usersPopularity: 120.148Language: English