Presbytery Attached to Cathedral of St Mary

The presbytery attached to the Cathedral of St. Mary is a Roman Catholic building dating from around 1860, designed by Edward Welby Pugin, with additions made in 1869 by A.M. Dunn. It is constructed of brick with ashlar dressings and features Welsh slate roofs. The building has an irregular plan, with a right wing that breaks forward at a 45-degree angle, and is designed in the Tudor style.

The presbytery is two storeys high and consists of three bays, with a lower two-storey, three-bay link to the Cathedral vestry on the left side. The main block includes a one-storey canted porch that has a central door within a Tudor-arched surround, and stone surrounds for the windows located at the angles. There is a gabled bay on the left with one window on each floor, and a square stair turret with lancets situated under a parapet on the right. Above the porch, there are lancet windows and a seven-light window. The forward-breaking wing features a front chimney stack with offsets, flanked by arched stone windows. The steeply-pitched roofs, hipped on the main block and link, are topped with tall polygonal chimneys that have ashlar strings and cornices.