Kate's starting point for the latest leg is the picturesque village of Alnmouth, once a leading grain port in the 18th century. Today it's known for its colourful houses and a gentle sweep of sandy beach where Kate meets a former GP, Claire, who uses the sand to create temporary large - scale artworks and portraits, which are visible for a few hours only, before the tide swallows them.

In this fourth episode, Kate walks a hilly coastline that is home to two of north Wales's most popular tourist destinations — the medieval walled town of Conwy, and the Victorian resort of Llandudno, once dubbed the Queen of Welsh resorts.