Architectural Features
Tower is late C12 at the base, early C13 externally with clasping corner buttresses, thin central pilasters, chamfered string courses, human head corbel table, fine C13 broach spire with 3 tiers of lucarnes in the principal directions, with paired pointed openings, the lower set having shafted reveals with dogtoothing.
In the aisles are C14 3 light windows with cusped curvilinear tracery and beyond gable buttresses with trefoils.
The north aisle, C14, retains single original 3 light reticulated window and 3 C19 copies.
Beyond to the east a recut 5 light late C14 window with rectangular surround.
The inner C14 doorway has a continuously moulded ogee surround and above a niche containing a plaque commemorating the restoration of 1891.
In the north wall are 2 fragments of C13 grave cover and east of the porch there is late C18 brick patching and buttresses.
C14 chancel has a moulded plinth and fleuron cornice with a single 3 light curvilinear window to the north and 2 to the south, each with 2 tiers of mouchettes and quatrefoil to the head.
On the south side an ornate C14 priest's door with moulded ogee head and crocketed hood with finial.
C14 south transept has angled buttresses
Restored C14 gabled south porch, the outer doorway is moulded with filleted shafted reveals, the inner doorway is continuously moulded, and above is a trefoil niche to the Moores of Wyberton dated 1881.
Beyond the porch a C14 3 light reticulated window.
Tower arch has C12 responds with scalloped capitals, and double chamfered pointed arch.
5 bay early C13 nave arcades having tall round shafts, moulded octagonal and circular abaci, double chamfered arches.
The arch braced nave roof contains much original C14 timber and is carried on massive trusses, supported by figured corbels.
In the north wall is a C14 doorway to the rood loft and at the south side a small window in a rectangular surround.
Double chamfered C13 chancel arch having narrow engaged octagonal responds.
Beyond is a contemporary sedilia originally of 2 bays, also with crocketed hood and carved cusps.
C15 wooden screen of 5 bays with ogee heads and panel tracery, reset as rood screen.
C17 octagonal panelled pulpit with guilloche arches, removed from Bourne Abbey church in 1891.
Jacobean oak pulpit in St.Mary's church, purchased from Bourne Abbey for £3.3/- in 1891
Ironbound C15 chest.
Transitional c.1200 octagonal font with intersecting blank arcading to sides and hobnail decoration to the top.
Late Norman octagonal font of c1200 in St.Mary's church, moved to its new location in the S transept with a new base in March 2000
Monuments.
C14 effigy of a civilian in South Transept.
6 ledger slabs in nave, 2 with brass matrices, in nave floor.