I have Virgin Annual Multi-Trip (Red) and it states:
"Your holiday or journey starts when you leave the place you usually live or work (whichever is later), or from the start date shown on your validation certificate, whichever is later. The end of your trip is the date that you go back to the place you usually live or work (whichever is earlier), or at the end of the period shown on your validation certificate, whichever is earlier. Cover cannot start more than 24 hours before the booked departure time or end more than 24 hours after you get back. Your cover cannot start after you have left your home area (unless you are asking for an extension)."
So I think my ex-EUs are fine, as I should be covered from the moment I step out of my front door on the way to my positioning flight