Hello,
In the line of work I am in, it is very common to see routers along a route doing things a little strangely, such as dropping packets and the such. The advise given is usually to try a different route from your source to your destination which may bypass the router that is causing issue; or wait, and the router issue may be fixed in time.
Restarting your Smart Hub should cause your IP Address to change, and therefore 'may' choose a different route through the internet, bypassing the issue.
However, as the issue you are referring to is deep within the BT's network, it is very doubtful you will get anyone from BT Consumer to tend to it — the issue would be too high up for an average customer to have any input on, and the likelihood is that the issue is being monitored by their network engineers and will resolve itself in the course of their own timescales.
So, in Summary:
1) Wait, and see if it resolves over time.
2) Reboot your Smart Hub to receive a new IP and test the route again (for if you are provided with a new IP from a different range, the routing may be different for that IP range to your previous.)
