traelkom I would guess that the answer to your question has two parts:-
1,before giffgaff can even consider offering esims,O2 have to make the service available to MVNOs that use their network so that not just giffgaff but Tesco and Sky etc can make them available to their customers.I think this could be a long way off because along with the other MNOs,there's a definite financial advantage to O2 keeping esim support to themselves to attract customers that want or need esims.
2,once O2 offer esim support to their MVNOs,it'll then be up to giffgaff to decide if and when they want to offer them to their members.
