It has a clerestory with sexfoil windows (with six heads) between buttresses, and an apsidal east end.
At the west end of the church is a 20th-century porch, above which is a rose window, and a canopied louvred opening in the gable.
The entrance is at the west end of the north side, and includes the arms of the diocese in its tympanum.
[1] Inside the church are arcades carried on widely spaced round columns.
Pugin designed the church to be large but economical; it provides seating for 1,800 people.