
The Most Holy Trinity Church at Dockhead is located in the Archdiocese of Southwark, which stretches from the south bank of the River Thames to Dover, Kent.
The Archdiocese of Southwark was established in 1851 by Pope Pius IX, during the restoration of Catholic hierarchical structures. The Archepiscopal See is St George’s Cathedral, Southwark which is headed by the Archbishop of Southwark.