‘The two most fascinating subjects in the universe are sex and the 18th century,’ declared the novelist Brigid Brophy when the ban on Fanny Hill was lifted in 1963. Penelope Corfield’s big, handsome, enjoyable book goes a good way to illustrating Brophy’s assertion. Part source book, part interpretive history of the long 18th century (1688-1837), it is also a guide and gazetteer to the continuing presence of Georgian England in our towns and minds.