Abstract: The invention relates to a storage locker for changing-rooms in sports facilities, for example. The locker comprises a semi-cylindrical chamber (1) in which is mounted a semi-cylindrical compartment (2) having a circular floor (4) and ceiling (5). The compartment (2) is mounted for rotation coaxially within the chamber (1) between a closed position in which the compartment (2) is outside the chamber (1) and an open position in which it is disposed therein. The compartment is biased towards the open position and away from the closed position. The lockers are drained and the compartment (2) stacked vertically in double rows with a common carcase providing the walls of the chambers (1). The lockers have electromagnetic locks and a computer providing a central supervisory and surveillance system providing warnings in response to alarm signals generated in response to abuse of the locks.The invention is especially applicable to swimming-pool changing-rooms.