I'll be going on holiday in London in about a month, I had my trusty O2 payg sim with about*£25 top up credit on it. I frequent England and like to keep it available. I cut it down to 3FF and it worked originally, however it has now ceased to function. I'm just wondering, if I stop in an O2 shop when I arrive, will I be able to get a replacement sim (preferably micro) and have the topup be transferred to that sim? I cut it off, but still have the ICCID from the cut card. Thanks!