@AdamW3 Good sign that is an issue with the Fibre connection from the supplier be it either OR or CF.... The diagnostic test linked below may throw some light on it! From sky the help advise!
Can't connect to broadband and have a red light on your ONT
Try running the line test here to see if any faults are found:
https://www.sky.com/help/articles/broadband-diagnostic-start
You can also run the test via the MySky app on a mobile data connection.
Once completed, if it reports back that all is good click on 'broadband' to run an updated test. If you get amber or red you need to follow the on-screen instructions.
If you’re still having problems you may need to call Sky to report it. Dial 150 free from your Sky Talk landline (if it’s still working). 8am to 8pm only!
and later if it has only just happened.
If you haven’t done it already use the below link to check to see if there are any broadband problems or outages nearby if enough time has passed for a fault condition to be displayed by the software test! This should determine if there's an identified fault affecting multiple households.
https://www.sky.com/servicechecker
