The English Spa 1560 to 1815 dealt with not only places of healing and recreation, but also with the political, religious, social, and economic aspects of English spa life from its origins to the eighteenth century. This second volume, which incorporates a considerable amount of material and draft chapters written by Hembry, continues to the present time and is extended to include Welsh, Scottish, and Irish spas as well.
Like its predecessor, sometimes goes into WAY too much detail so that there's a bit of a forest-for-the-trees issue happening in this book. However, I don't know of any other volumes this comprehensive on British Spas, so still recommended for those truly interested in the topic.