Late C13 west tower of 2 stages with a chamfered string course separating base from the belfry stage.
The eastern part of the south chancel w-all is of ironstone and chalk squared coursed rubble with a fragment of a C13 string course near the east end.
Further west is an in situ C13 pointed headed door with beyond much patching of the walling and the west end of the wall is actually in brick.
Further west is a C13 2 light window with pointed heads and a tympanum pierced by a further arch head
In the east wall is a C19 2 light window, and in the south wall are 2 C16 windows with flat heads and ogee headed lights, one of 3 lights, the other of 2, both much restored.
West wall his a seemingly original though much restored late C13 2 light window with pointed heads, cusped quatrefoil and chamfered hood mould now ending in C19 human head label stops.
South door is late C13 with chamfered reveals and dying sunk wave beneath a hollow hood mould with C19 Southwell style stops.
Inside, the north and south arcades are of 3 bays, both late C13, with octagonal piers, capitals and abaci with double chamfered arches.
It appears that these arcades may replace earlier ones since the west respond of the south arcade takes the form of an engaged round shaft with an annular capital of early C13 form, as does the lower (reused) element of the eastern respond of the north arcade.
The tower arch is also late C13 with engaged octagonal jambs with facetted capitals and a deep triple chamfered arch.
The chancel has Minton tiles, a painted reredos and, on the east wall, delicate terracotta floriate tiles.
In the south wall of the chancel is a late C13 triple sedilia with free standing facetted shafts and plain arched heads.
Roofs and fittings are all C19 apart fom the earlier of the 2 fonts.
The font was apparently returned to the church in 1876.
The second font is early C19 and of marble, oval in form with a swept stem, gadrooned decoration with a wrought iron mounted deal lid.
On the north side of the chancel is an immense alabaster tomb to Sir Robert Tyrwhit'of Kettleby, d. 1581, and his wife.
The 2 figures, she headless, kneel opposite each other, contained in a framework of single Corinthian pillars supporting an entablature surmounted by an achievement of arms.
Between the figures was originally an altar, now demolished.