Hertfordshire

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. Sean Fletcher is building a home fit for a Kingfisher and foraging for a wild dinner. John Craven is returning to his days as a scout and cooking up a storm on a woodland fire. And Adam Henson is discovering the estate where rewilding and farming sit side-by-side. Now in its fifth year, what effect is culling badgers actually having on rates of TB in our cattle? Tom Heap's looking at the science behind this controversial practice.