Harry Potter fever makes one couple glad they kept up a 200-year family tradition. But what would mother make of it?

The besom is a type of broom which is traditionally made from hazel wood and birch twigs, although in the Yorkshire Dales they are often made using dried heather. Brooms of this type have a limited working life as the twigs degrade with use and gradually fall out of their binding. Modern, long-lasting, machine-made brooms might have driven the besom to extinction, had it not been for a literary craze at the turn of the millennium. The publications of J.K. Rowling's Harry Potter novels tell the story of a boy-wizard who can fly on besoms, and the hundreds of millions of fans of the books drove a world-wide demand for these archaic cleaning tools as decorative accessories.

Tonight's Dales Diary starts in the Swaledale village of Reeth where Luke Casey meets potter, Monica Young who moved to the Dales twenty years ago. It wasn't until she reached her mid 40's that Monica started to experiment with clay and taught herself how to make 'big pots'. It took one and a half years of patience and stamina, before she finally succeeded in making pots around two and a half feet high. Today, she thinks nothing of making a 6ft or 7ft pot - and prefers to think of them as sculptures rather than pots. Her pots are very simple and minimalist in design and look incredibly graceful. She now has a worldwide reputation and her work graces embassies and hotels in places such as Tokyo and New York and last year she was awarded a Gold Medal at the International Craft Exhibition in Munich.

Until a few years ago the black grouse was the fastest declining species of bird in Britain, but this has now stabilised thanks to the Black Grouse Recover Project which is a venture run by the Game Conservancy Trust, the Ministry of Defence, the RSPB, English Nature and National Wind Power. Luke chats to Lindsay Waddell, head keeper for Lord Barnard at Raby Castle, about his involvement in the project. As well as being a keen conservationist, Lindsay is also a very keen amateur photographer, and has taken some beautiful shots of game and wading birds who live in Weardale.

Finally Luke revisits a family in Farwarth on the North York Moors. Brian and Nicola Eddon are among the country's last remaining producers of besom brooms. The continue a traditional craft, which has long been associated with the Eddon family (Brian's mother Angela featured in the second series of The Dales Diary) who used to make around 2,000 brooms a year when the steel industry was flourishing in the North East. When the steel industry died, the demand for besoms almost dried up too. However, since the rise in popularity of the Harry Potter stories, besom brooms have come back into fashion, albeit in a slightly smaller form, and the Eddon's are once again back in the business of producing besoms.