We found no staff on duty within the station. There's an Alarm Point on each platform, just beyond the top of the entrance escalator.
The DLR has alarm points which differ from the help points normally found in London Underground stations.
There are three buttons, from the top:
There's also a sign warning you that you’re on video.
HOW DO I…?
HERON QUAYS STATION
© 2012, Terry Robinson