Eight semi-buried air raid shelters of concrete construction consisting of a single long rectangular chamber mounded over with earth, having a surrounding drainage gully. They were entered at one end via a flight of steps with two toilets at the other end next to a vertical exit shaft on the wall of which a steel rung ladder is attached. Several of the shelters display a vertical tubular vent pipe at their exits. One of the shelters along Otterpool Lane has collapsed. Nine shelters were reported during the 1999 survey, although only eight are visible from the 1999 aerial photographs. Only three are shown on a site plan dating from 1945.