Datchworth Church, now dedicated to All Saints was originally dedicated to Saint Mary Magdalene. It is situated on a piece of ground in the shape of the Greek letter ‘theta’, formerly owned by the Abbey of Westminster. The ground was surrounded by a moat, which may still be traced, and contained north of the church, the Manor of Datchworth. The possession of the land was confirmed to the Church of Westminster by a charter of King Edward the Confessor. There was thus, in all probability, a church on this site before the Norman Conquest.

The present Church has Norman portions and is built of flint rubble and stone, handpicked from the local fields. The absence of the usual devices of builders to ensure strength and durability has led to the conclusion that the Church was originally built by the people themselves.

The porch is 16th Century, with blocked loops and a four centred entrance arch. The porch doors were added in 1973 in memory of Mr H Humphries.

The Font is 15th Century work with a panelled stem and octagonal bowl; there is a Font Ewer in copper circa 1720.

The Tower, the lower part is 15th Century with an arch dated 1380. The spire was added in 1875, it was restored in 1929, re-shingled in 1974 and has had some recent repair work. The clock was added in 1875 in memory of William Williamson, a former Rector. The following Rector, John Wardale, established a charity for repairs to the clock. The bells are a light ring of six. The larger five were cast in 1673. The smallest became cracked and was recast in 1875 when a smaller one, the gift of Daniel Pennyfather, was added.

The North Aisle is late 14th Century, with a 15th Century window at the east end. The west window is circa 1875 and depicts sowing and reaping and was given in memory of the Pennyfather Family. The central modern window is the work of local artist Maria Glenn and was commissioned in 2000 to mark the beginning of a new millennium. It was paid for by donations from the village - click on image for further information. In 1512 there was an altar to St Dunstan, probably at the east end of the North Aisle.

The Nave, built in the 12th Century, has a north arcade of four bays. The south wall has two windows; the eastern one dates from 1360 and shows Jesus with Mary Magdalene. Beneath this window, under an arched recess, is a coffin lid with a floriated cross. This is probably the tomb of a crusader or a founder of the Church. There is a 17th Century oak chest, and kneelers were made by parishioners in 1975. The screen was put up in 1901 and the rood cross was added in 1962.

The Chancel was remodelled at about the end of the 16th Century. The east window glass is 19th Century and was brought from Watton Church. Three lights show The Passover, Abraham and Isaac and Moses in the Wilderness. There is a 17th Century oak chair by the altar. The painted Reredos was added in 1951.

The Church Plate includes a Chalice and Cover Paten dated 1569 and a silver Flagon dated 1855.