There's something rather magical about an outdoors bath. To lie back and soak surrounded by trees and birdsong, or the sound of the sea, or wild and rugged views is both slightly strange yet incredibly relaxing. Whatever it was you were worrying about, you'll find it just melts away amid the hot water, steam and fresh air. We've chosen some of the very best outdoor bathtubs in the UK where you can wash your troubles away under sunshine or starlight.