Jules Hudson and the Countryfile Diaries team travel the length and breadth of the UK to uncover the best winter stories. Paul Martin is at his Wiltshire smallholding and wants to find out how people with just a balcony or even a windowsill can grow vegetables in winter. From cut-and-come-again salads to veg grown in old wellies, a garden in a carton and herbs in old guttering, there is no shortage of clever, thrifty ideas to brighten up the smallest of spaces. Jules is in Milton Keynes finding out how dogs are being trained to detect cancer. With a sniffing prowess than can detect a teaspoon of sugar in somewhere the size of two Olympic swimming pools, these detectives on four legs are helping to push the boundaries of medical science. In the Lake District Ellie Harrison gets stuck in as she finds out how footpaths are kept open in the winter for people to enjoy some of the most breathtaking scenery in the UK.