Buying a Three PAYG Sim Card @ LHR T3
Looking for a data sim for my upcoming USA trip, I just read about the Three pay as you go sim cards you can get in the UK.
I found a supplier that would ship me a card to Germany, however it wouldn't arrive in time. Since I'll be transiting at Heathrows Terminal 3, I was wondering if there is a store (preferably air side) that sells these cards.