Hi @GordonRoof 

It probably has a lot to do with reboots - if you were to reboot your Q box, all the speakers would immediately jump over to the router, where there’s still a connection to be had. If you were to reboot your router, all the speakers would jump over to the signal from the Q box, which even without an active internet connection, would still be broadcasted. If you reboot the speakers, however, they will log on to whichever signal is stronger at that particular location. Switching your Sky Q box off and on again at the wall will likely clear up issues for a while - until the next reboot of the router or speaker. However, you’d need to make sure your phone wasn’t connected to the Q box either, and the phone is more likely to switch as it is moved around the house.

It’s a real shame that Sky insist on repeating the WiFi signal, but poorly! Your use of a Bridge will have been preventing this issue back when it was in use - we just need to get you back to that configuration.

OK, that's what I will do. In the meantime, I will set my google clock to do the alarms. Real shame after spending all that money on Sonos products over the years. Thanks