This episode is in Pembrokeshire, following six rural businesses through the key events of their seasonal year.
Entrepreneur Geetie Singh-Watson, who set up the UK's first organic gastro-pub, is with young rookie chocolatiers who are trying to take on the big boys from an old cow shed in west Wales. She also finds out how a Californian radio host and a Welsh farmer have created probiotic goats' milk products that are turning them a big profit from a tiny amount of land.
In the foodie county of South Devon, Back To The Land shows just how much graft, love, tenacity and skill lies behind every rural business as we follow six of them through the seasons.
Kate Humble is with a cider and drink makers who are trying to reverse the trend of Devon's apple orchard decline as they plough a six-figure sum into a new orchard on their land.
The presenter follows innovative businesses in the Lake District through Spring, Summer and Autumn, painting portrait of the rugged landscape and gaining an insight the challenges they face. Kate Humble helps with lambing at a fifth generation farm who have invented the world's only wool compost, so they can keep their farming traditions alive. She also goes foraging for wild food, which went to waste until one woman realised she could turn it into unique jams and preserves that are now sold nationwide.