Knox U.F. Church and Church Hall, Mill Street, Montrose

The Knox United Free Church and Church Hall, located on Mill Street in Montrose, was constructed in 1851. It is a pointed arch church with a connecting vestry and church hall, built of sandstone ashlar. The main frontage features a symmetrical triple-gable design with pinnacles, squared and ladder-pinned to the sides and rear. The building has an approximately square plan, featuring a battered base course and moulding, with a cornice above the ground floor. Splayed margins and battered cills are also present.

The western (principal) elevation is symmetrical, with three gables divided by buttresses rising to gablets. The central gable features two circular ground-floor windows with quatrefoil tracery, above which are three stepped windows with hoodmoulds. A small circular quatrefoil window is found in the gablehead, topped with a stone cross finial. The outer gables contain a doorway at ground level, topped with a hoodmould and a two-leaf door with decorative wrought-iron hinges. An additional window with a hoodmould sits above the door. Angle buttresses with gablets flank the composition.

The southern elevation has three windows offset to the right. The northern elevation also features three windows offset to the left, with a vestry adjoining at ground level. The eastern elevation has a projecting central gable, featuring two windows with trefoil tracery and a circular window above with quatrefoil tracery. The gables of the aisles are set back; the left gable is blank and now has a later brick lean-to at ground level, while the right gable has a vestry attached at ground level, along with a single-pitched roof, pointed arch window, a plain window, and a door in the return.

The hall and session house share a western elevation featuring an entrance arch with quatrefoil and a connecting wing set back from the church. A pointed arch window and a door are located on the southern face of the hall. The Session House is positioned to the left, exhibiting a canted apsidal frontage with pointed arch windows featuring trefoil heads, the central window being bipartite with a quatrefoil head. A buttress is present on the left side.

All windows retain intact stained glass and leaded lights. The grey slate pitched roofs have stone skews.

The interior is remarkably fine and largely original, dating back to the 1878 redecoration. It includes numbered box pews, a gallery with mouldings, panels, and timber compound columns. The ceiling is a timber barrel vault with ribs rising from columns. A grand pulpit features an ornate wrought-iron and brass balustrade and ascending stairs. Stained glass windows from 1878 are present. The organ pipes are housed in a gothic case flanking cast windows. The hall has timber-panelled coving, and the former session room is now used as a kitchen.

Simple wrought-iron railings are in front of the vestry, and wrought-iron gates with crocketed finial decoration are located on the south side.