History and structure: the church is late thirteenth century and fourteenth century with a major restoration of 1876 by R R Rowe. The basic structure is rubblestone and limestone ashlar and dressed limestone with leaded roofs and end parapets with nineteenth century gable crosses.

West tower: fourteenth century in origin but rebuilt 1876 by R R Rowe in memory of 4th Earl of Hardwicke, Lord Lieutenant of Cambridgeshire, by public subscription. Four stages with deep moulded main cornice. stone ashlar, incorporating some medieval work. West doorway has two centred arch and four hollow and roll moulded orders carried on ring shafts of pink marble. West window is fourteenth century, reset with three trefoil lights in two centred arch with reticulated tracery and surroundings enriched with an inner order of ballflower and an outer order of dogtooth ornament. The second stage has in each side wall a circular window with two orders of ballflower enrichment. The bell stage has a pair of lancets to each side.

Nave: with coursed limestone clerestory and blocked parapet, fourteenth century, with main course having large beast and grotesque gargoyles. Clerestory has on each side six windows of two trefoil lights in two centred arch each. South aisle with sandstone rubble walls and limestone dressings. Five windows, three restored and two fourteenth century in part. Blocked limestone parapet has three grotesque gargoyles. North wall of nave has five fourteenth century style trefoil light windows.

South porch: fourteenth century, of coursed limestone with two stage angle buttressing. Gabled roof has blocked parapet and end parapet with corner pinnacles and main cornice with gargoyles carried round from the south aisle. There is a restored two centred outer arch of hollow and ogee moulding on three half round clustered columns to the responds. The south chapel is extensively restored but in the east wall is a two cinquefoil light window in two centred arch with geometric tracery. There is a rood loft staircase in the angle between the chancel and south transept.

Chancel: has two thirteenth century lancets, restored, and a fourteenth century window with reticulated tracery. The east window was also restored by Rowe. Restored thirteenth century lancets in north wall of chancel.

Interior: Two centred tower arch with hollow and roll moulded orders. Reset chancel screen, fifteenth century, in tower arch with drop tracery to the upper stage and open lower stage. The bays originally divided by engaged shafts with embattled capitals and bases. Six bay nave arcade of two centred double chamfered arches on octagonal columns and moulded bases. The responds at the west end and the east end to the transept had been rebuilt. The east end has similar arches to the transepts but the piers on the west are of marble.

Transepts are much rebuilt, although in south transept the shafted rear arch to the window in the east wall remains. In the north transept a niche in the east wall has an ogee head, enriched with running foliate ornament and flanking crocketted pinnacles. The carved wooden altar in the south transept chapel, the Lady Chapel, is said to be Elizabethan in origin.

The roof is nineteenth century crown post type but it is carried on original carved corbels. The south aisle also has a nineteenth century pent roof and the medieval corbels There is a restored doorway in four centred arch to the rood loft staircase which gave access to the rood through a doorway in the south wall of the chancel, now blocked. The chancel arch, fourteenth century, is two centred of two chamfered orders on clustered engaged columns with splayed bases and moulded capitals. The thirteenth century lancets in the chancel have original rear arches as does the fourteenth century window with similar shafted rear arch as that in the south transept. Trefoil head to low recess in north wall in chancel.

The pulpit is c1876, limestone with marble shafts at the angles. The organ dates from 1884 and was extensively restored in 1990. The font is fifteenth century, limestone, octagonal bowl, lead lined on stem with four griffins. The sides of the bowl carved with rosettes and demi angels with blank shields of arms, and the soffit also carved with angels. A wooden screen, formerly the rood screen, now divides the nave from the west tower.

Monuments: North aisle: John Towers 1677 white marble wall monument. William March, 1700. Limestone and white marble wall monument. Brass, John Godfrey, 1454 and his wife; William Noyon, 1405. For more details of the monuments, which are one of the principal architectural features of the church see separate notes.

Meeting Room: In 2000 a new meeting room with kitchen facilities has been constructed in the North Aisle. The room is made largely of glass so as not to obscure the wall memorials. It has been funded in part by the Millennium Commission, East Cambs DC, Haddenham Charities Haddenham Parish Council and other local donors. The project also incuded new toilet facilites in the tower base.

N Pevsner, Buildings of Cambs and Isle of Ely, p399

Cambridge County Council Historic Building Record 005750 1952