Union reps have been pushing for the cleaners' storeroom at Hendon Central to be moved from its current location, which beyond the safety barrier. Cleaners don't quite have to walk onto the track to access it, but it's not far off.
ISS and LU say that, because cleaners' "Sentinel Cards" require them to be PTS accredited, they are licensed to go on or near the track to access their storeroom.
At best this is an inconvenient location for a storeroom, that cleaners need to access regularly. At worst it's downright dangerous.