Our Friend in Yorkshire: Katy Boulton
Robson Green has done it. Professor Alice Roberts has also given it a go. Darcey Bussell tried it in Scotland recently. Kate Humble did it naked. Susannah Constantine took an axe with her when she did it. Barely a week goes by without someone from either Countryfile or The One Show doing it. And Port Talbot resident David Bryan credits it with helping to save his life.