West Pavilion and attached quadrant colonnade

The West Pavilion and attached quadrant colonnade, dating from circa 1629-1635, was originally built for Sir Francis Crane. It was altered in the late 18th century and restored in 1970. The pavilion’s structure is brick with a limestone and ironstone ashlar facing, covered by a hipped slate roof and featuring a stone internal stack. It is a single-story building with an attic and basement, exhibiting a three-window front.

The basement, faced with ironstone, includes a central door with a moulded limestone surround and flanking square windows with similar surrounds. The basement serves as a plinth, supported by a giant order of Ionic pilasters that define the bays. These pilasters have limestone bases and capitals and support an ironstone entablature with a contrasting pulvinated frieze and brown-painted moulded wood eaves. The central bay projects slightly, with additional "shadow" pilasters on either side and a pediment. There is a late 18th-century central Venetian window with a moulded limestone head, and flanked by fifteen-pane sash windows with moulded ironstone surrounds, plain friezes, and moulded cornices, the sills of which were lowered in the late 18th century. The blind attic windows have moulded stone surrounds topped by flat-arched limestone heads with console keyblocks. The pilasters and window dressings contrast with the limestone-faced walling.

A two-story porch wing, on the right side facing the former forecourt of the house, mirrors the pilaster design and features an open ground floor with a minor order of Ionic columns supporting a moulded limestone lintel. Porches are present at the front and rear, also with similar columns. Tall round-arched windows on the first floor have moulded stone surrounds, limestone imposts and console keyblocks. These are blind to the front and rear. Pediments on the front and side bays, previously depicted in Vitruvius Britannicus, were replaced by a hipped roof in the late 18th century. A quadrant colonnade begins behind the porch wing, now in a ruinous state.

Inside, a double-height room, originally a library and later converted into a ballroom in the late 18th century, is notable for its coved plaster ceiling with a fan motif above the Venetian window. A room above the porch is open to the ballroom and functions as a gallery. The basement includes a wide shallow brick vault, niches, and an entrance to a brick-vaulted tunnel running between pavilions beneath the colonnades. The West Pavilion was part of a tripartite composition which included a main house that was destroyed by fire in 1886.