Thanks for posting. Both accounts have to be in the same name and address to get Volt benefits. You can as a Virgin Media user, use the O2 Priority app as well, however. Download the app and click 'sign in with my Virgin Media details'.
Thanks for coming back to me. We don't offer a Transfer of Ownership I'm afraid. The only way to do so would be to cancel the existing account (though if in contract you may incur a disconnection fee) then re-sign up after 3 months no service at the current property.