NUMBER 17 STORE (MO 37)

Number 17 Store, also known as MO 37, is an ordnance store built between 1740 and 1750. It is constructed from Dunstone brown rubble and English bond brick, topped with a hipped slate roof. The building has a single-depth plan and is a single-storey structure featuring a four-window range. The corners are made of brick, and the front displays a closed arcade of round brick arches with flat arches above horned 6/6-pane sash windows. The walls are made of rubble, and there is a round-arched doorway with a metal-clad door on the end facing the Powder House.

Inside, the store does not have any special features, but it includes an inserted floor and a three-bay roof supported by 20th-century roof timbers. The Yard was established by the Board of Ordnance starting in 1720. The store is made from similar materials to the adjoining Powder House, suggesting a possible connection in purpose. It is listed for its group value and as part of the best surviving 18th-century ordnance yard in the country.