Spoke to Sky this morning after struggling with this problem twice this week. Usually we'd have it happen maybe once a month, normally around midnight-1am (I work late shifts from home until 11pm so I'm usually the only one to notice), and it'd right itself overnight. This week, we've had two outages in the day, which is new, so have twice spoken to Sky.
First call was impressively unhelpful - continually reading from the script, refusing to listen, but the internet righted itself within an hour, although I'm convinced Sky's help didn't actually, y'know, help - but the second call, which took place today, was night and day.
The operative had it fixed within 40 minutes, having escalated to the fibre team. They claimed that the fact my router is plugged into a Sky booster with a wired connection can cause authentication issues, and lead to outages. They suggested connecting to the booster via wifi instead. They also said you can unplug for 30 minutes but that's pretty common advice, I just thought I'd share what appears to be new information.
I'm aware it won't help everyone but if it helps one, it's worth it!
FTTP: Voice light goes to orange and the internet stops working.
