The Domesday book states that there was a church here before 1087, and it was probably enlarged to a cruciform plan in the mid-12th century. In the 14th century the church was completely rebuilt, with some remaining masonry in the east wall. The foundation of five Chantries in the church is also recorded in the 14th century. The west tower was added around 1400, and a clerestory added a few years later. In 1782 the chancel and chancel aisles were dilapidated, and were taken down, the space being given to enlarging the marketplace outside. Extensive restoration was undertaken in 1834, the north wall was rebuilt with five windows, the tower was partly rebuilt, and the lantern above was completely rebuilt in 1837. The ceilings were repainted in 1987.

The church consists of a nave of three bays with north and south aisles, chancel (former crossing) with north and south chapels which were once transepts, the original chancel being removed, a south vestry and western tower with octagonal lantern. The lantern tower was originally built around 1400 and was to provide a beacon for travellers to the north of the city. Lenses to the lantern have been found in the tower. There are four bells.

The west window contains 14th century glass which was removed from the church of Saint Saviour, Saviourgate. There are several windows by Kempe, and there is also a window from 2002 dedicated to the Royal Dragoon Guards.