Listed Building File Throttles Service

[pooleycodes]

This URL seems to keep popping up in the logs and causing a rise to 100% for the async processor in dev, an investigation is needed into why and how to stop it.

https://services-eu1.arcgis.com/ZOdPfBS3aqqDYPUQ/arcgis/rest/services/National_Heritage_List_for_England_NHLE_v02_VIEW/FeatureServer/0

Also for future work, it would be beneficial if Slack can inform us when the processor has sat at over 75% use for more than an hour