Hi Lbe,
Thanks for taking the time to contact us via the Community. It's lovely having you on board with us in the Forums. ⭐
We're sorry to hear you've lost access to your Virgin Media email address. We're only able to restore access if you have an active Virgin Media broadband account. As you've mentioned in your post that you are not a Virgin Media account holder, there wouldn't be a way for us to restore access I'm afraid.
The only thing we would be able to do is raise this with IT to completely delete the address so if anyone tried sending you an email via that address, the email will bounce back with an 'undelivered' message. If you'd like us to arrange this, pop back and let us know.
Apologies for the inconvenience.
Thanks,