The church consists of an integral nave and chancel with W bell-cote and S porch. The fabric of the building appears to be basically Norman work with later 13thc. windows. Much restoration work was carried out in the 1860s and in 1890, from when the bell turret dates. There is a very fine crisply carved limestone hexagonal heraldic font, probably early 15thc. By the E side of the S porch, half hidden in the grass, is something which might have been the Norman font (of sandstone with a square inner tub), but this is not described here.

Cottam is not mentioned in the Domesday Survey.

Benefice of Rampton with Loncham, Treswell, Cottam and Stokeham. Formerly a chapelry of Treswell.

The doorway is a curious confection. The point-to-point jambs are accurately carved work of the later 12thc., perhaps as late asc.1200 when the dogtooth inner order arch was carved. The sloppily carved scallop capitals appear earlier, and the outer order much earlier. The inaccuracy of construction and lack of impost blocks argues a remodelling or even that the doorway was fabricated from several sources (ed.).