Three-stage C15 ashlar tower has full-height clasping buttresses with gableted first step, a deep moulded plinth and chamfered bands between the stages.
Bell stage has similar facades to all sides, each with odd tapering pilaster strips to sides and a large louvred bell opening, made up of two tall pointed two-light openings with central transoms and cusped tracery, set below a continuous ogee headed hoodmould with a large gargoyle finial.
Over the gargoyle is a plain pilaster strip which rises up into the parapets, between the pilaster strips to either side there is a coved eaves string course.
Embattled parapets above have crocketed corner pinnacles with gargoyles to the base of each.
To either side there are crocketed ogee headed niches with the figures of saints in.
South aisle also has clasping buttresses to either corner and to west of the south face, a gabled porch with pointed outer doorcase on attached shafts with moulded capitals, plus small lancets to either side and a small C13 inner door with hoodmould.
Nave roof is a well restored cambered C16 roof with moulded tie beams and gold leafed bosses, also with C19 cornice to edge with gold star motifs.
East wall of the chancel has a full-height carved and painted stone reredos with the figures of saints set in crocketed ogee headed niches to top and painted shields below.
The choir stalls are in similar style with carved poppy heads and bench ends, these probably also date from 1904.
Across the chancel arch there is a fine medieval rood screen with crocketed ogee headed open panels to top with panel tracery over, also with C19 cross
Hanging from the ceiling above there are two large carved flying wooden angels.
The nave has an octagonal carved wooden pulpit to north side with ogee headed crocketed panelled sides and an octagonal tester above.
The pews have linenfold carving to bench ends, these and the pulpit both date from the 1904 refurbishment.
To the west end of the nave the tower arch has a C19 screen, a copy of that across the chancel arch, and above there is a large painted and carved organ.
The stone font in the tower has a moulded octagonal base and stem with a circular bowl over, and a C20 cover.
Below is another brass plaque of 1821 noting the reorganisation of the funds from the above donation.
To the south wall of the aisle there is a painting by Pasinelli, of 1693.
There are a large number of wall memorials and tombs including some very fine ones.
To the west end of the nave there is a slate and white marble memorial to Henry and Margaret Robinson who both died in 1829 and to the north wall of the nave there is a white marble wall memorial with a weeping figure below a carved pediment, to Charles, third Earl of Harrington who died 1829, by Canova, one of only three in England.
Beyond to west the C18 chapel houses a large white, grey and black marble memorial to John Stanhope to centre, a c1898 wall memorial with gothick stone aedicule to Elizabeth, Countess of Harrington and two painted plaques recording all the passed clergy.
The monument to John Stanhope is most impressive and has an elaborate sarcophagus base with a recumbent, armour-clad figure looking forward leaning on his elbow, to top.
Behind there is a deep base of black marble with the corners breaking forward, topped by pairs of gadrooned urns, over which there is a large wall plaque with moulded open pediment and a central shield with Latin inscription recording that the monument was erected to John Stanhope who died 1638, and was restored by Charles Stanhope in 1731.
Both the monument and the elaborately moulded plasterwork ceiling cornice all look c1731.
Above there is an alabaster wall memorial to Talbot Stanhope who died 1915.
To south side of the chancel there is an unusual wall memorial to Seymour Hyde, third Earl of Harrington, who died 1866, with his figure set in a crocketed canopy, all in enamelled inlaid brass.
Eastern bay of the chancel has a brass plaque to Charles and Dorothy Prodgers who erected the extra bay in 1904 and furnished the nave and chancel.
The stained glass is all C19 or later, the west window of the tower has a late C19 figurative window and the nave has early C20 stained glass to both upper and lower windows on the north side.
South side of chancel has a brightly coloured stained glass of c1852 and the north window of the 1904 chancel bay has contemporary figurative stained glass.