The Presbyterian congregation which used to meet in Tothill Street, Westminster, during the later Stuart period is now chiefly remembered for its succession of distinguished pastors. There were three of them, each a figure of importance in the dissenting community of London: first Thomas Cawton, a Bartholomean, under whose direction the congregation was formed and held together in the precarious years following the enactment of religious Uniformity; then Vincent Alsop, an accomplished controversialist who took issue with the doctors of the Church of England, and who, for a quarter of a century, faithfully tended his flock in good times and bad; finally there was Dr. Edmund Calamy, the learned historian of Caroline nonconformity, one of a new generation of Presbyterian divines, during whose early ministry the meeting removed from Tothill Street to other and more spacious premises in the nearby Princes Street. Our present purpose is to take a closer look at one of these ministers, the middle one—Vincent Alsop, ‘a man of great worth and piety’, who superintended his Westminster congregation from 1677 to 1703, the year of his death. His ministry, as we shall show, was to make an important contribution to the emancipation of Old Dissent, especially in the 1680s.