Clare Balding returns to her favourite county, Northumberland, to walk part of Isaac's Tea Trail, a thirty-six mile (58km) circular route, starting from Allendale. This long distance path, launched in 2002, was inspired by the tale of Isaac Holden, an itinerant tea seller and philanthropist who in Victorian times was a familiar figure on the rough tracks over Allendale Common and Alston Moor. Clare is accompanied on her walk by Roger Morris who devised and maintains the route, Andy Lees ,from The north Pennines Area of Outstanding Natural Beauty and retired journalist Anne Leuchars, who blogs about the route and has walked it all . She explains why the area is her adopted home and the very special role Isaac played in the local community. The walk starts at Keenley Wesleyan Methodist Church and ends at Holden Hearse house. Grid Ref : NY803567 End ref at NY782523 Producer Lucy Lunt.