The north wall is pierced by four windows, dated to circa 1330–1360, each containing a single light with tracery of trefoil design.

The four windows on the southern side are of similar date and design, although each formerly contained two lights divided by a central mullion.

[5] Of these windows in the southern wall, the one nearest the altar (East) is flanked by a piscina and a sedilia.

Facing the sedilia on the North side is a niche which is thought to be the location of the Easter Sepulchre.

[7] The chapel was acquired and restored by the Ministry of Works between 1947 and 1954 and is now under the guardianship of English Heritage.