My journey has brought me to Devon, famed for custard, cream teas and the mighty River Tamar. This is a river that is facing its fair share of problems from agriculture as well as sewage pollution.

The Ribble is a beguiling river, powerful in parts and tranquil in others. And it's one I've always wanted to fish. I'm visiting the small rural village of Wigglesworth for a very different reason. 20 ...