You can have Blizzard's servers run the tests against your IP using the Battle.net Looking Glass accessible via https://eu-looking-glass.battle.net/ , you can even choose the specific WoW realm to test.
From the stats you've posted it appears you need an technician visit to fix the levels, the upstream is operating at the very upper end of the spec and some of the channels have dropped modulation level, and you have downstream channels completely missing.
You could try making sure all the coax connections are tightly and securely fitted first, but I suspect the visit is going to be needed. You can either wait for a forum team member to reply to this thread which will take up to a week, or call 150 (03454541111 if you don't have a Virgin landline).
Welcome to our community forum page, it's great to have you on board.
I'm sorry to hear about the packet loss issues you have been experiencing when playing World of Warcraft and I have now sent you a private message so we can take a closer look at your account to diagnose the issue.