[2] It is considered to be "the most outstanding Norman church in the county" (Northamptonshire),[2] and "its capital sculpture is one of the highlights of the Romanesque in England".

[7] She was imprisoned in Banbury after calling the Bishop an anti-Christ and only admitting that on the charge of incontinence she was innocent.

This included re-roofing the church, rebuilding the east end and lowering the floor of the nave by 1 foot (0.3 m).

[2] In 1878–79 his son, John Oldrid Scott carried out a scheme of decoration using stencils on the interior of the east wall.

The two colours of stone are in some parts of the church used alternately for decorative purposes both externally and internally.

The east façade designed by Gilbert Scott has three stories divided by string courses.

[3] The capitals are carved in a variety of designs, which include faces, foliage, animals and birds, and abstract motifs.

In the south aisle is a Saxon grave slab, carved with birds, beasts and a Green Man.

The memorials in the church include one to the geologist William Smith who died in 1839 and is buried in the churchyard.

[9] In 2002 the internal fabric of the church was being damaged by the growth of mould due to excessive condensation.

Low-level heating was installed, the mould and layers of paint were removed, and this was replaced by limewash.

Concerts, educational, and social events are organised in the church, and occasional services are held.

An organisation known as The Friends of St Peter's was founded in 1995, which works to care for the fabric of the church, to promote research, and to encourage social use of the building.