Eleventh-century tower and later alterations
The west tower dates to the eleventh century, when Saxon and Norman building practices overlapped. It has three stages and a battlemented parapet added in the seventeenth century. The walls incorporate septaria and reused Roman bricks, including bricks at the corners.
The ground stage contains eleventh-century windows in its north and south walls. The bell stage has fourteenth-century windows, while the larger west window was altered in the sixteenth century.
Churchyard and Roman villa
Roman structural remains and mosaics have been recorded in the area beneath the churchyard and neighbouring properties. Brick and tile recovered from earlier Roman buildings were reused in parts of the church. The villa remains are buried archaeological deposits, not a visitor excavation.
The churchyard was closed to new burials in November 1889, apart from the reopening of existing family graves. Earlier burials had taken place above buried Roman structures; the church’s Saxo-Norman tower also incorporated Roman bricks in its quoins.
A church that continued to change
The church has remained in use through successive medieval and later rebuilding campaigns. Its tower was already standing in the eleventh century; the present chancel, arcades, porch, windows and furnishings record work carried out across the following centuries.
Nave, chancel and furnishings
The fifteenth-century north porch retains two carved corbels from an earlier roof, while the chancel has a timber roof later altered with Tudor-style additions. Among the older fittings are a thirteenth-century Purbeck marble font, a medieval coffin lid carved with a cross and two historic chests.
The nave is joined to its south aisle by a four-bay arcade. The fourteenth-century chancel has walls of squared ragstone and a timber roof with seven angled slopes. A fifteenth-century north porch and sixteenth-century alterations to the windows contribute to the building's later medieval appearance.
The font has a thirteenth-century Purbeck marble bowl on a later support. The church also contains a carved coffin lid dating to about 1300, an iron-bound sixteenth-century chest and a leather-covered seventeenth-century chest fitted with three locks. The sanctuary rail has turned balusters and was brought from Semer Workhouse.
Historic England's Grade I listing contains the detailed architectural record.
Later work and memorials
The building continued to change after the medieval period. In 1833 alterations included changes to the porch and vestry, the north wall of the nave and the plastered south arcade. A gallery installed in 1812 was taken down in 1882.
Work in 1925 included rebuilding the south aisle roof and removing wall plaster, exposing a former piscina niche. A memorial window commemorating the fishermen and oystermen of Mersea Island was installed in 2005.
A relief of the Annunciation was installed on the church’s south wall in 1954. It had belonged to Dr Willett Cunningham and formerly hung in the hall of his home, The Nothe, at the end of Coast Road. After the 1953 flood affected the house, his family moved to higher ground and he arranged for the relief to be given a permanent place in the church.
National Churches Trust — St Peter and St Paul
West Mersea Town Council, churchyard history and 1889 closure