I have recently moved my whole tv/calls/fibre to Sky from Virgin. Since moving, i have had a shed load of issues with my Sonos set-up.
These issues include drop-outs (like they're going out of fashion), 'loss' of zones, complete shutting down of connection to the controller, loss of connection to Spotify (so much so that i have deleted it from my system, tried to re-install it but cannot, as Sonos cannot see it).
I bought a Sky Wifi Booster from fleabay, hoping this might help, but not a chance. It's as if the Sky router has a major problem with the Sonos system . It ran like clockwork with Virgin's SuperHub, but i had to change because the whole Tivo GUI was flaky at best, and unresponsive most of the time.
I have full wifi signal throughout my house, with no dropouts and such with any of the 3 iPhones, iPad and laptop we have whilst using other applications/browsers/email etc..
Hugely frustrated, i will be on the phone to Sky towers this afternoon, but thought i would throw it out there incase any of you learned fellows may have had similar experiences.