The naturalist wanders along the shorelines of Britain. On Holyhead Island in north-west Wales, Kate discovers one of her favourite rare birds and Britain's longest breakwater - a 1.7-mile-long feat of Victorian engineering.

In this third episode, Kate walks a rugged and scenic route along Ayrshire's coast, the birthplace of Scotland's National Bard, poet Robert Burns. Less than an hour from Glasgow, this corner of southeast Scotland is rich in history and pristine wilderness.