Originally Posted by
Silver Fox
In that case I would try to get a Three SIM so you can use the "
Feel at home" feature of it. I come through T2 a lot and I kow there is a vending machine at baggage reclaim, I am not sure about the shops though. If it were me I would wait until I was at my hotel. Most corner shops, petrol (gas) stations, supermarkets, Poundland, all will have SIMs that you can buy.
I'll second that suggestion about Three. The SIM should cost you no more than £1 any more than that and you're paying too much. They can be free with your top up. To use Feel at Home you need to make sure that you are on the 3-2-1 PAYG plan and have bought an add on which has minutes and data included, ideally before leaving the UK.