The church is noted for its strikingly decorated interior, much of it to designs by Bodley. Fittings by Bodley include the
alabaster font, the
pulpit, south aisle screen, textiles, pews, candlesticks and tiles. The
rood screen was designed in 1904 by John Morley, architect at
Rattee & Kett of Cambridge. Its function was not purely liturgical as its
cornice hid a large support beam which had been added to bolster the chancel arch from the massive weight of the spire. The wall and ceiling decorations were applied by
F. R. Leach & Sons and form complex, bold stencilled patterns throughout the church. As well as exotic floral friezes there is much use of religious symbolism such as the
Sacred Monogram and the
Fleur-de-lis. Around the upper walls are texts from the
Book of Revelation () and
Psalms in the south aisle, and the
Beatitudes () in the nave. Part of the Beatitudes have been lost due to water damage to the plaster. One of the team of artists was David Parr who decorated his own house in a similar style and with similar designs.
David Parr House on Gwydir Street has been restored and is open to the public. The east window was designed by
Edward Burne-Jones and executed by
Morris & Co. It was installed in 1866 as a memorial to Lady Affleck, wife of
William Whewell, master of
Trinity College, Cambridge. She had lain the foundation stone of the church in 1863 and also donated £1,000 to its construction. The twenty figures, over four rows, were individually designed by Burne-Jones (12 panes),
Ford Madox Brown (4 panes) and
William Morris (4 panes). The diagonal lettering and oak leaf borders were designed by
Philip Webb. It is most notable for its high proportion of pale, silver-tint glass, which is believed to be a rebellion against the dark, rich colours prevalent in stained glass of the time and it allows much-needed light into the chancel. In the north wall of the nave are three windows by
Charles Eamer Kempe and one by
Douglas Strachan installed in 1944 which features depictions of
Elizabeth Fry,
Josephine Butler,
Edith Cavell and
Mother Cecile Isherwood. There are also two south aisle windows, one by
Ward & Hughes and the other by Philip Webb with possible additions by F. R. Leach. High in the west end window are two angels - a sun bearer and a moon bearer designed and produced by William Morris. == 2021 and beyond ==