Former Officers' Quarters, Royal Artillery Barracks (also known as Le Cateau Barracks)

The Former Officers' Quarters at the Royal Artillery Barracks, also known as Le Cateau Barracks, was built between 1874 and 1875. It was designed by Lieutenant General Charles Brisbane Ewart, who was the Deputy Director of Works for Barracks at the War Office.

This building is constructed of brick with yellow brick and stone dressings, featuring brick ridge stacks and a slate roof. It has a single-depth axial plan and is two storeys high, with a window arrangement of 11:4:11. The symmetrical front displays a yellow brick band over the ground floor windows, a yellow brick moulded eaves cornice, and a taller central gable that is set forward. There are gabled porches on moulded kneelers leading to round-arched doorways, each with a fanlight and two-panel, two-light doors, positioned on either side of the central gable. The windows have moulded lintels and consist of 6/6-pane sashes, while the central gable features round-arched first-floor windows beneath an oculus. The rear is similar, with two-storey porches and 20th-century single-storey service blocks.

The interior has not been inspected. Historically, Le Cateau is notable as the last surviving example of the new layout of cavalry barracks developed in Aldershot during the 1850s. It is part of a group with other barrack buildings and was the second permanent barracks constructed in Colchester, following the nearby Cavalry Barracks built between 1862 and 1864. Originally, it was positioned at the head of two parallel rows of three cavalry barracks on each side, of which two survive today, known as Blocks A and B, both listed as Grade II. The Former Officers' Quarters serves as a key feature of the original layout and is significant within the context of the barracks complex.