John Wesley , founder of Methodism was born 300 years ago. To mark his tricentenary, Valentine Cunningham investigates the influence of Nonconformity on Britain in a three-part series, looking at everything from hymn-singing Chartists and Quaker prison reformers to the moral makers of biscuits. 1: Roy Hattersley, Jenny Uglow and the Reverend Dr Leslie Griffiths look at the political legacy Of John Wesley. Producer Robyn Read