In 1973 the famous cartographer Alfred Wainwright published his book, A Coast to Coast Walk - a pocket sized pictorial guide that traced a route from the West Coast of England to the East - through the stunning scenery of three National parks - the Lake District, the Yorkshire Dales and the North Yorkshire Moors. It is regarded as one of the best walks in the world. Now, with Wainwright's book as his guide Tony Robinson is walking the 192 miles of this iconic walk - a route that winds its way from the ancient community of St Bees Head on the west coast across jaw-dropping countryside and picturesque villages, to the stunning seaside town of Robin Hood's Bay on the east. Each episode will cover approximately 30 miles of brilliant British countryside.