[1][6][7] Its rood screen was removed to St Nicholas' Church, Newchurch.

[1] St John's is constructed in sandstone with a slate roof.

The church stands on a north–south axis, and its plan consists of a nave with low aisles, a chancel, a porch, and double transepts.

[1] At the southwest is the base of an intended tower incorporating a porch, which rises to a height of only 10 feet (3 m).

[6] It contains diagonal buttresses, a doorway above which is blind arcading, and a pyramidal roof.