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A photographer has published a book documenting a 6,835 mile (11,000km) walk around the entire coastline of mainland Britain.
Quintin Lake, from Cheltenham, walked the route in chunks over five years, having first set off from the steps of St Paul's Cathedral on 17 April 2015.
His journey took a total of 454 days, with Mr Lake taking 130,000 pictures on the journey for his book The Perimeter.
"Unless there was barbed wire, I really did walk the lot," he said. "There's no right or wrong way to do it but I was very particular in how close I kept to the edge."