No

[Ian028]

No Wi-Fi in all rooms. I have upgraded to full fibre to improve connectivity, however the WiFi is still not reaching all areas of the house

[Stellavision]

Full fibre does not give you better WiFi coverage and won't fix any previous connectivity issues, unless a result of bandwidth utilisation. 
Sky offer extenders to improve WiFi coverage if you have either boost with the hub 4 (black hub) or WiFi Max (white hub).