Stonyhurst College, Old Infirmary and attached passage

Stonyhurst College's Old Infirmary, built between 1842 and 1843 and attributed to J.J. Scoles, is a Roman Catholic boarding school that includes accommodation for the Jesuit community, display rooms for collections, archive storage, and offices.

The building, constructed of sandstone ashlar or coursed dressed stone, features deep moulded plinths, string courses, hoodmoulds, cornices, and copings, topped with pitched roofs of Welsh slate. It is designed in the Jacobean Revival style and is located at the north-west corner of the West Front, connected to it by a covered dog-leg passage.

The exterior, built on the site of a demolished outbuilding, complements St Peter’s Church in the composition of the West Front. The structure is two storeys high over a basement with attics and has a symmetrical five-bay south front. The central doorway is flanked by cross windows with sashes, and all windows have hoodmoulds. The roof has a plain parapet with coped verges and pinnacle finials. The gabled west front features two large semi-elliptical arched openings to the basement and mullioned windows on the upper floors. The rear elevation is simpler.

The single-storey covered passage, built around 1843, connects the former Infirmary to the north-west corner of the West Front. The south elevation has five bays with three-light mullioned windows, buttresses, and a moulded parapet above a Welsh slate hipped roof. On the north side, there is a single-storey lavatory block known as Jumps, built around 1870 and named after renovation funded by Ralph Lyon Jump OS in the mid-20th century. This block features a Welsh slate hipped roof with a lantern behind a parapet.

Inside, some rooms in the former Infirmary have 19th-century marble chimneypieces, and the lavatory block has a marble floor.