Clare is in Fife hiking with John Fletcher who, in 2009, was the first man in Scotland to donate a kidney to a stranger. In another pioneering first, he launched Britain's first commercial deer farm back in 1973.
Their route begins on John's farm in Auchtermuchty, surrounded by rare white stags. Walking brings John great joy and he - along with a fellow kidney donor, and a renal nurse – takes Clare on one of his favourite rambles.
See the 'related links' section at the bottom of the Ramblings webpage for a list of organisations, including the NHS blood and transplant website.
Presenter: Clare Balding Produced for BBC Audio in Bristol by Karen Gregor