Within the above image, I would like to ideally hide the polygons outside the current atlas feature (some to the east and also to the west - these are part of other atlas features)
They are currently masked which helps, but it would better if they could be hidden entirely.
I still want the MasterMap to show through, so I cannot just increase the strength of the mask (unless I can do that and exclude the MasterMap from the mask somehow?).
This is being created within QGIS 2.18.17 in a map composer.