The entrance leads into the base of the tower that acts as a porch and a baptistry; this leads in turn through two arches into the nave.
 Above the arches is a clear four-light window that is lit by the window in the west wall of the tower.
All the ceilings are of painted wood; that of the north aisle is a tunnel vault, the south aisle ceiling is sloping, and the ceiling of the nave and chancel is flat.
 On each side of the nave is a four-bay arcade supported by octagonal piers; there is no chancel arch.
 All the stained glass was made in 1878–80 by Morris & Co. and designed by Edward Burne-Jones and William Morris.
 The five-light east window contains three tiers of figures.
 The central figure at the top is the Good Shepherd, and on each side are angels, the middle tier consists of angels, the central image in the lowest tier is a pelican, bounded on each sides by saints.
 The east window was a memorial to Charles Howard, MP, brother of the 8th Earl of Carlisle.
 The font dates from the 13th century.

To the north of the chancel is a war memorial chapel, with the vestry on the floor above.
 The chapel contains an altar panel by Byam Shaw, and a carpet with a William Morris design.
 The three-manual organ was built about 1920 by Jardine & Co. of Manchester.
 It was rebuilt in 2008 by Nicholson & Co. of Malvern.
 There is a ring of six bells that were cast in 1826 by Thomas Mears II of the Whitechapel Bell Foundry.
The entrance leads into the base of the tower that acts as a porch and a baptistry; this leads in turn through two arches into the nave.  Above the arches is a clear four-light window that is lit by the window in the west wall of the tower. All the ceilings are of painted wood; that of the north aisle is a tunnel vault, the south aisle ceiling is sloping, and the ceiling of the nave and chancel is flat.  On each side of the nave is a four-bay arcade supported by octagonal piers; there is no chancel arch.  All the stained glass was made in 1878–80 by Morris & Co. and designed by Edward Burne-Jones and William Morris.  The five-light east window contains three tiers of figures.  The central figure at the top is the Good Shepherd, and on each side are angels, the middle tier consists of angels, the central image in the lowest tier is a pelican, bounded on each sides by saints.  The east window was a memorial to Charles Howard, MP, brother of the 8th Earl of Carlisle.  The font dates from the 13th century.
To the north of the chancel is a war memorial chapel, with the vestry on the floor above.  The chapel contains an altar panel by Byam Shaw, and a carpet with a William Morris design.  The three-manual organ was built about 1920 by Jardine & Co. of Manchester.  It was rebuilt in 2008 by Nicholson & Co. of Malvern.  There is a ring of six bells that were cast in 1826 by Thomas Mears II of the Whitechapel Bell Foundry.
St Martin's Church, Brampton