The Old Bull, including nos. 141 and 142 Church Street

The Old Bull, which incorporates numbers 141 and 142 Church Street, is an inn and hotel dating to the mid-18th century. It has been enlarged and remodelled over time, with a significant addition of an assembly room in 1773, designed by John Hird for the Earl of Derby. The building is constructed of stucco and brick with sandstone dressings, all painted, and has a slate roof.

The building has a complex, irregular plan, featuring a double-depth front range in two sections with a carriage entry at the junction, a long rear wing, and the assembly room attached at a right angle to the south-west corner. It is four storeys high, with a facade of 4+4 windows. The ground floor is rusticated, apart from numbers 141 and 142 on the right, which share a mid-19th-century shop front. This shop front has coupled pilasters topped with moulded consoles, a frieze of triglyphs and metopes, and an ornamental wrought-iron balcony. The upper floors contain sash windows; the ground and first floors have simple sashes, the second floor has 12-pane sashes, and the third floor has square 6-pane sashes. Ridge and gable chimney stacks are visible. A Venetian window is located on the first floor of the south wall of the assembly room.

The interior of the assembly room, known as the Derby Room, is a double cube. It has Venetian openings centrally on each long side (a doorway on the north side, a window on the south side), along with fluted Ionic columns, an enriched frieze, doorways in the corners of each end wall (the west-end doorways are false), moulded architraves, dentilled cornices, and a small, unsupported musicians' gallery at the east end with a panelled front and rounded corners. The room is elaborately decorated with Rococo features, including moulded plaster panels with trophies and urns, scrolled foliation between the panels, a triglyph frieze with deer masks, and a coved, panelled ceiling. The front range of the building forms a group with number 143 attached to the right-hand end.