The church is on a roughly square plan, with the sanctuary in the east corner. The walls are faced in brick laid in stretcher bond, while the west porch is of concrete blocks. The higher folded roof over the eastern diagonal half of the church is terminated by a clerestory of projecting glass pyramids, forming a gable over the centre in front of which hangs a cross. The folded roof and the pyramidal roof over the porch are covered in copper. The west porch has diagonal buttresses and timber door with sidelights.The interior is well lit by the clerestory and by glazing to the west end and porch. The western flat roof and the eastern folded roof are both panelled in timber, as are the wall above the sanctuary and the eastern part of the side walls. In both roofs and the brick walls, the concrete skeleton projects slightly. The doors and openings to the tabernacle niche and the Barberi Room to the north and the sacristy (south) have brick surrounds. The sanctuary on semi-circular steps has matching furnishings in Hornton stone. Above hangs a crucifix. On the south wall is a relief by Faith Tolkien depicting the meeting of Newman and Barberi, while framed letters by Newman are displayed nearby. Other statues in the church are of St Faith (the patron saint of Oxford) and Our Lady. The Stations are unframed reliefs.
