Iolo Williams explores four of Wales’s most stunning river valleys from sea to source, uncovering their hidden wonders and remarkable wildlife.
The Rheidol Valley
Iolo Williams explores the Rheidol valley and looks for elusive pine martens. He’s also treated to views of red kites nesting in a village and explores a remote zinc mine.
The Dyfi Valley
Iolo Williams explores the Dyfi Valley, from Ynyslas dunes and Cors Fochno bog to Ospreys at Cors Dyfi and wild Beavers near Machynlleth.
The Conwy Valley
Iolo explores fascinating woodlands, searches for Curlew chicks and uncovers the history of an ancient burial chamber nestled in the beautiful Conwy Valley.
The Vale of Clwyd
Iolo Williams explores the Vale of Clwyd, from coastal lizards and rare butterflies to a tame raven and elusive red squirrels, uncovering the valley's hidden wonders and wildlife.
Iolo Williams
Self - Presenter
First Minister in a Pandemic
2021
Billy Connolly's World Tour of England, Ireland and Wales
2002
Hot Cakes
2022
Wild Wales
2010
Elis James: Football Nation
Rugged Wales
2012
Hidden Wales with Will Millard
2018
Iolo's Secret Life of Birds
24 Awr Newidiodd Gymru
2025
Wales: Land of the Wild
2019
Rhod Gilbert's Work Experience
Wynne & Joanna: All at Sea
Hidden Houses of Wales
Geheimnisse Asiens - Die schönsten Nationalparks
2014
Merveilles d'Europe
Rivers with Griff Rhys Jones
2009
Earth's Great Rivers II
James and Jupp
2017
Vintage Roads
The Story of Wales