[2] The church stands on the site of part of the Roman Praetorium, and some of its fabric dates from that time.

[3] In 1849–50, the church was repaired by James Harrison,[4] and in 1886 it was restored by John Douglas, which included the addition of a pyramidal spire.

Its floor is at the level of the adjacent Watergate Row and the church is entered by a flight of seven stone steps on the south face.

At the west end there is an embraced tower that rises one stage above the roof, with a clock and a bell opening of two lights.

On the northeast pier is a niche that formerly contained a statue of the Virgin and Child, and surrounding it is the best-preserved medieval wall painting in Cheshire.