[2] Its lower part originally served a defensive purpose, being built with thick walls, no buttresses, very small windows, and no entrance.

The west doorway has a Neoclassical surround, including a triangular pediment, a triglyph frieze, and Doric columns.

[2] It is in Georgian style, with an eight-bay nave, and a two-bay chancel terminating in a shallow square apse.

At the east end of the church are paintings by Jacob Thompson of Penrith dated 1845 depicting the Angel and the Shepherds, and the Agony in the Garden.

The brass chandeliers were given to the church in 1746 by the 2nd Duke of Portland in recognition of the part the town played in the defence against the Young Pretender in 1745.

The stained glass in the east window of 1870 is by Hardman, and that in the north aisle, dating from 1889, is by Burlison and Grylls.

In 1868 a two manual organ was built by Forster and Andrews (Hull) in the present position in the south gallery.

Six of these were cast in 1763 by Lester and Pack at the Whitechapel Bell Foundry, and the other two by John Taylor and Company of Loughborough.

[6] The church contains a stained glass image of Joan Neville (née Beaufort) born about 1375, daughter of John of Gaunt (1340–1399) and Katherine Swynford (c1350-1403).

Joan was the niece of Geoffrey Chaucer (-1400), author of The Canterbury Tales, husband of her mother's sister, Philippa, (née de Roet), and her son was Sir William Neville (1405–1463), Baron Fauconberg, Commander of the Yorkist army at the Battle of Towton in 1461.