This is a meticulously-researched book, well-written and easily accessible for the general reader. The author uses copious quotations that are very well chosen and representative, and often prompt you to learn more about the individual ministers/theologians who wrote them. And to assist you in that quest, there is an extensive Bibliography and Author/Subject Index, plus a shorter List of Biographical details for the primary theologians mentioned in the text. Most Nonconformist denominations are covered, and it does, for instance, give a very neat and fair summary of the development of Unitarianism in the UK. That being said, the historical focus is primarily on the first half of the Twentieth Century. Looking towards the theological future, the author states that there may be "significant contributions from such groups as the Brethren, the Pentecostals, the black churches, and from several networks of independent evangelical churches", but unfortunately these are scarcely mentioned elsewhere in the book. That weakness aside, this is an enjoyable read for anyone with an interest in the subject, and is an invaluable work of reference.