The history of church architecture in seventeenth-century London lacks threads of continuity. It is dominated by two great men, Inigo Jones and Christopher Wren, whose contributions could not and did not straddle the whole metropolis or the whole of the century. Besides, the devising of a new church was too significant an act to be left entirely to those capable of architectural design. There is a related misconception that churches were seldom built in London between the Reformation and the Great Fire of 1666. Yet even within the City of London, numerous parish churches were rebuilt during this period, while Jones substantially remodelled Old St Paul’s Cathedral. Beyond the City, much more was happening. London’s earliest seventeenth-century suburban churches were broadly Gothic in style and medieval in type, while those built at the end of the century were entirely classical auditories. The same could be said of church building in a national context, although not without hefty qualification. What is fascinating, important, and insufficiently studied, is the nature of this transition and its wider historical meanings.