We are now happy that this issue has been solved. Thank you for your patience.
The upstream issue is resolved, we will be working with individual customers to revert to the primary link.
All traffic has now been migrated away where possible, we await updates from the 3rd party
We're currently migrating any affected customers away from the 3rd party where possible
Connectivity has been partially restored, we're continuing to monitor updates
This incident has been logged and our team is now working to diagnose and fix the problem.