Countryfile - Barbel in the Old River Lea
Countryfile is in Hertfordshire, where Charlotte Smith meets the man who's made it his sole mission to save the barbel in the Old River Lea. The Link below is to the BBC iplayer and the complete episode. The feature is spread in sections over the complete show.
https://www.bbc.co.uk/iplayer/episode/b09gy7k9/countryfile-hertfordshire