The current Bishop of Bunbury, since 3 November 2018, is Ian Coutts.

[3] The cathedral is of brick construction in a modernist style with a prominent clock tower at the east end crowning the sanctuary.

[4] Prior to 1962, the diocese was based at St Paul's Pro-Cathedral, which was constructed in 1866 on the site of an earlier church.

St Paul's, previously only a parish church, had been named a pro-cathedral in 1903 in preparation for Bunbury gaining diocesan status the following year.

Granted by the College of Arms in 1953, the coat of arms of the diocese is:Argent two Swords in saltire points upwards proper hilts and pomels Or on a Chief per pale Azure and Gules four Estoiles in cross of the first and a three masted Ship in full sail also proper.