Fountainbridge Telephone Exchange, 116 Fountainbridge, Edinburgh

The Fountainbridge Telephone Exchange, located at 116 Fountainbridge in Edinburgh, is a four-storey Modern building designed by Stewart Sim between 1948 and 1952. It features an L-shaped layout with flat roofs, combining rectangular and bow-ended blocks. The exterior is made of polished cream sandstone ashlar, with large steel-framed windows and white-painted metal aprons on the rectangular block, while the bowed block has protruding cills.

On the southeast elevation facing Fountainbridge, the building has a three-bay design with a cill course and plain giant pilasters that separate the glazed screen wall. The northeast elevation, which faces Gardner's Crescent, consists of ten bays. It features a recessed glazed four-bay screen wall on the outer left, with ridged pilasters. There is a single bay return that connects to a regularly fenestrated two-bay bow, with a door at ground level. A lintel course extends across six bays to the right, and the glazing on the southeast side of the staircase reaches the full height of the upper floors. The roof is higher than the adjoining blocks and includes a metal structure with satellite antennae. The six bays to the right are regularly fenestrated.

The southwest elevation has seven bays and mirrors the southeast elevation, with metal semi-circular projections between the floors of the penultimate bays. Various machinery vents and wires are attached to this side. It is a plain rectangular block with a two-leaf timber door at ground level.

The building features steel-framed fixed and casement windows, with six- and nine-pane configurations on the rectangular block, and six-pane windows on the ground floor and four-pane windows on the upper floors of the bow-ended block. The southeast side of the staircase has a 60-pane window.

The boundary walls consist of coped grey sandstone ashlar, located at the corner of Fountainbridge and Gardner's Crescent, with an iron gate. There are sandstone ashlar piers and iron gates at the entrances on both Fountainbridge and Gardner's Crescent.