The aisles end not in complete arches but in lean-to ones, connecting to the vestry (south) and the soldiers' chapel (north). The central nave, on the other hand, is divided from the chancel by a low alabaster screen, showing Blomfield's adherence to the Cambridge Camden Society's ideal that a chancel and nave should be structurally separate. At the east end, at the High altar is a reredos designed by Powell's beneath tall triple lancet windows depicting the Ascension, framed by mosaic images of one angel of the left captioned Sperate (Hope for) and another on the right captioned Surgite (Arise).
The aisles do not conclude in perfect semicircles but instead taper off into sloping extensions, linking to the storage room (south) and the chaplain's quarters (north). The central nave is divided from the altar area by a low marble screen, showcasing Blomfield's commitment to the Cambridge Camden Society's ideal of separating the sanctuary and nave. At the eastern end, a reredos designed by Powell is situated beneath triple lancet windows depicting the Ascension, surrounded by mosaic images of an angel on the left labeled Sperate (Hope for) and another on the right labeled Surgite (Arise).