The development of Milton Keynes that was to absorb the village of Shenley Church End did not begin until the mid-1980s, and it is now on the SW edge of that conurbation. Its name, along with that of Shenley Brook End to the S, indicates that the medieval village was in a forest clearing, and indeed part of Shenley Wood survives to the W. Although the area is dominated by the curving streets and pastiche houses of the New Town, it retains a further trace of its medieval past in the motte, called the Toot, to the S of the church.
The church is cruciform with a central tower, aisled and clerestoried nave with a S porch, transepts, and chancel with a N vestry. Romanesque interest centres on the chancel, of c.1200 with windows with nook-shafts inside and out and the remains of a vault in the form of a corbelled wall-shaft with elaborate capitals. The presence of a blocked plain 12thc lancet in the E wall of the S transept suggests that the present chancel is not the original one. The S arcade is crude work of c.1200 or a few years later, certainly not by the sophisticated workshop responsible for the chancel. The N arcade is later still. Both arcades are of 4 bays, and their E bays were cut back when heavy buttresses were inserted to support the crossing tower. All details of this are 15thc, and it must have been rebuilt at that time. The aisle windows are 14thc, as are those of the clerestory, and the latter are more elaborate on the S side than the N (as are the chancel windows). These facts, together with the presence of a S porch, indicates that this was the side of normal approach originally, but now the church is approached from the N and worshippers must walk around it to gain entry. The N vestry was added in the 19thc. Features recorded here are the chancel windows and vaulting shaft and the S nave arcade.