Hi Dave,
The issue was logged on Friday and has been chased today as the issue hasn't been resolved over the weekend, hopefully it will be resolved soon. The helpdesk team tell me it's with third line support, but yet to receive an update.
Since the outage on the 27th May we have experienced reduced download speeds, in our case we are only getting one-third of our normal download speed. upload speed has been not been affected. It feels like the download has been traffic managed since the firewall issue happened.