Castle Hotel Lakins Night Club The Bow Street Runner

The Castle Hotel, which now incorporates Lakins Night Club and The Bow Street Runner, is an early 18th-century building with additions from the mid-19th century and around 1900. It is constructed of brick with ashlar dressings and has tile roofs with brick stacks. The building has a roughly L-shaped layout.

The main façade, facing Holloway, is three storeys high with a four-window range. The weathered base is topped by a platt band above the first floor and a wooden cornice. The right-hand end features a Tuscan porch with a scrolled wrought-iron balcony and half-glazed doors with a blind overlight. The ground-floor windows have rubbed brick flat arches; the centre window is a 12-pane sash with thick glazing bars flanked by four-pane horned sashes. The first-floor windows are four-pane horned sashes, with a stained-glass window on the right-hand end. The second-floor windows are casements with pegged frames, also with stained glass on the right-hand end. A cross-axial stack is present. The return façade facing Market Street features a five-window range with four Ionic pilasters, a frieze and cornice above the entrance, which has paired doors. This side also has a 12-pane sash with thick glazing bars to the left and altered 12-pane sashes on the first floor. Casements with pegged frames are found on the second floor.

A mid-19th-century addition to the right (on the Holloway facade) is three storeys, extended around 1900 to create a four-storey, three-window range. The addition has segmental-headed windows, with 12-pane sashes on the ground floor (two with thick glazing bars), 12-pane horned sashes on the first and second floors, and casements on the third floor. There are end stacks. A similar three-storey, single-window range was added around 1900 to the right-hand end. A two-storey garage range of around 1900 is set to the end of the building, with shaped gables and elliptical carriage entrances, one with paired plank doors, one with a late 20th-century infill, and one now containing an inserted window. The garage has elliptical-headed windows with keystones and hoods on the ground floor, with similar windows on the first floor and a large oriel window on the left-hand end, featuring a bowed centre, dentilled cornice, slate roof, and some stained glass. A datestone is located above the oriel.

The Market Street façade has a 19th-century, three-storey, two-window addition to the left, with a first-floor sill course and a coved cornice. The ground floor has an entrance with rounded upper angles, and a window to the right. The first floor has segmental-headed windows with four-pane sashes and continuous hoods, while the second-floor windows have four-pane sashes with shaped aprons. The rear of the building includes various gabled wings and additions, including a single-storey wing under a hipped roof.

Inside, the hotel contains chamfered beams and a staircase with column-on-vase balusters. The hotel is an important part of the Holloway streetscape and contributes to the setting of the nearby castle. The garage range was an early facility for motorists.