Wifi dropping in and out

[AW23]

My WiFi keeps dropping in and out. Service checker isn't flagging any issues with my broadband or WiFi. 

Sky hub has green, flahsing amber, green, amber lights

[JimM1]

@AW23 Your hub knows that there is no broadband and indicating that by going to the Amber light status, does not mean that Sky have any idea to what the particular reason is and the same goes for the service checker software. Diagnostic may be better or more help!

This should determine if there's an identified fault affecting multiple households.

If there aren't any then try running the line test here
Try running the line test here to see if any faults are found:
https://www.sky.com/help/articles/broadband-diagnostic-start