Thank you for your assistance. I've sorted the problem for now. I think my wifi extender had gone rogue.

Ian

Video viewing now impossible due to stuttering. Last month or so. Any channel at any time is the same.

Now forced to Firefox, which works as it should with no stutters.

Could not report the bug because form would insist on a file or other example and I don't have anything - so cannot talk to Opera. Grrrrrr. Is this goodbye?