[2] The east window is a notable work from the studio of Charles Eamer Kempe and there is a wooden screen and rood loft designed by Sir Ninian Comper.

Around the Host cluster six angels, so to speak within the 'petals' of the 'rose', while, in the spaces between the 'petals' are depicted six lilies, the stem of each shown surrounded by a circlet inscribed with 'Ave Maria'.

The Marian theme is reiterated in the outer elements of the tracery, where the acclamation, Gloria tibi Domine/ qui natus es de virgine is seen, written on two scrolls.

Panels in the lower tracery specifically depict the Annunciation: Gabriel addresses the Virgin with Ave Maria and she replies with Ecce ancilla Domini.

At the lowest level of the window we find heraldic art and representations of St Michael and St George flanking three central panels which have been left blank because, originally, damask cloth stretched over a tall frame or board set behind the altar obscured the lower, central part of the window.

The window was dedicated to Lieutenant-General Henry Hope Crealock CB, CMG, who was the uncle who had recently bequeathed a substantial fortune to the Revd Salisbury Price.

[10] Multi-coloured strapwork forming a border for the main five lights is patterned with alternate leopards' heads and wheatsheaves, motifs taken from the Price and Crealock arms respectively.

A wheatsheaf in the bottom left hand corner, later the characteristic mark of Kempe windows, is found here for the first time in a design from his studio.

The screen contains the Latin inscription Oremus huiusce pro benefactoribus capellae (Let us pray for the benefactors of this chapel) and two antiphons provided for the Feast of Holy Cross according to the Sarum rite, as follows: As explained by the Revd Canon Chris Barber in the church's guide book,[14] Comper was deeply aware of the liturgical significance of his designs and very knowledgeable about their historical context; and thus it is not surprising that in designing a chancel screen with the traditional rood and its supporters, St Mary and John the Apostle, Comper should incorporate the liturgical texts appropriate for the veneration of the Christian cross.

The pipe-organ at St Peter's-in-Ely[15] is by William Hill & Son, a very small instrument with only seven stops, a single manual and half a pedal-board.