Originally Posted by
stringymacca
I can see there is availability to upgrade from Club to First but BA can’t direct me to Aer Lingus but Aer Lingus (who only communicate about upgrades via email
[email protected]) say they can only deal with upgrades on actual Aer Lingus flights.
That email address, as they have correctly says, handles the long established (and fairly generous) UuA system within Aer Lingus, typically for business class seats for those who have purchased economy tickets. It pre-dates Avios but it is only for Aer Lingus' own booking and own flights.