@leeburt no obvious changes to Sky's network over the weekend. I would suggest powering down your router for 10 minutes or so which should force a change in IP address and the physical server you connected to this often sorts odd issues.
By default the firewall on Sky hubs blocks all ports from enxternal devices except for those used by known protocols such as UPnP. Of course these ports are open to traffic initiated by apps on your network. If your employers servers need access to devices using specific ports then you can open these selectivily by creating acfirewall rule but if everything worked last week and your company's system has not changed there should be no need.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
