David W Bebbington 
Victorian Nonconformity [PDF ebook] 

The Nonconformists of England and Wales, the Protestants outside the Church of England, were particularly numerous in the Victorian years. These Methodists, Congregationalists, Baptists, Quakers, Unitarians, and others helped shape society and made their mark in politics. This book explains the main characteristics of each denomination and examines the circumstances that enabled them to grow. It evaluates the main academic hypothesis about their role and points to signs of their subsequent decline in the twentieth century. Here is a succinct account of an important dimension of the Christian past in Britain.