Another reason not to use them.
Virgin don’t charge in Upper Class for seat selection.
It depends where you live really - From Edinburgh they connect you to the world and if you are Silver it is a great way of visiting a lot of places in relative comfort.
Breeze through Security with Fast Track, Have your Breakfast in the Lounge and then Priority Boarding to your free Exit Seat.
Lunch at the Lounge at LHR and then repeat above steps.
Coming back it's the same from most places you go to.
That's 4 Fast Track Security 4 Lounge Visits 4 Exit Seats all Gratis not even mentioning the copious luggage allowance if you need it.
Book with BA Holidays and if anything goes wrong they are quick to rectify using the dedicated number you get.