5/5 The end of his journey takes Griff to East Anglia, the part of the country he knows best.
4/5 Griff Rhys Jones is in London where he explores the River Lea.
3/5 Griff follows the mighty Severn and its neighbour, the Wye, from their sources in Wales.
2/5 Griff Rhys Jones travels from Liverpool to the Humber along Britain's working waterways.
1/5 Griff travels upstream from Kinlochleven into one of the most remote areas of Scotland.