Abstract: A gripping device for being suspended from a load handling device for lifting and moving containers stacked in stacks in a grid storage structure including a plurality of tracks arranged in a grid pattern above the stacks of containers. The gripping device including a frame and at least one gripping assembly mounted on the frame. The gripping assembly including at least two grippers, each gripper being configured to engage a container located below the frame. Each gripper is movable between a gripping position for gripping the container and a release position for releasing the container. The gripping device further including a single linear actuator coupled to the at least two grippers by a linkage assembly such that actuation of the single linear actuator drives the at least two grippers substantially simultaneously between the gripping and release positions.