Between 1989 and 1991 the church was enlarged in an Italianate classical style by the Driehaus Prize winner Quinlan Terry, replacing an earlier extension made in 1974.

[2] The architect Quinlan Terry took his inspiration from the early Italian Renaissance crossed with the English Baroque of Christopher Wren.

The cathedral was designed along a square plan, focussed on the high altar, placed in the nave to accommodate the changes in liturgical fashion after the Second Vatican Council.

The handmade traditional Smeed Dean brick of the clerestory leads up to the octagonal lantern, or cupola, the high point both of the outside and inside.

The east elevation juxtaposes the old and the new, linking them through the scale of the 1991 building and the use of ragstone and Welsh slate roof tiles.

This and the white walls and stone floor combine to give a translucent effect which uplifts the spirit and conveys its own sense of the presence of God.

The cathedral is lit by brass English Classical chandeliers (one of which was formerly in the church at Epping) and, above the cornice, concealed lighting.

The figure represents a transitional period in the theology of design where Christ still wears the crown of the Risen Lord, but the corpus is that of the crucified Saviour.

For several years a number of recordings and broadcasts on BBC Radio have been made and tours undertaken in Austria, Belgium, France, Germany, the Netherlands and Ireland.