I did, however it's not an ideal solution.
I discovered that the issues only occurred when I was signed into my account. Anyone else's account or a guest account worked fine.
Having spoken to two Sky engineers and attempting every fix we could think of, the only solution was to delete my old YouTube account and create a brand new one. I tried creating a new channel on my original account but the issue was still there.
I've no idea why but creating an entirely new account fixed the issue, although I annoyingly had to resubscribe to all my fave channels etc.
If you have a lot of your own content then this may not be a solution for yourself as you'll lose everything you've uploaded when you create a new profile.
