In early 2009 a strange sort of business plan landed on the desk of a pinstriped bank manager. It asked for a GBP30,000 loan to buy a black-and-cream narrowboat and a small hoard of books. The manager said no. Nevertheless The Book Barge opened six months later and enjoyed the happy patronage of local readers, a growing number of eccentrics and the odd moorhen. Business wasn't always easy, so one May morning owner Sarah Henshaw set off for six months chugging the length and breadth of the country.