Dear all. Please be aware that in checking how much data I would have on my unlimited data UK plan, I was informed of a change that was happening on O2 on the 2nd August. My unlimited data package would only be good for 25Gb per month data usage and above that would be a whopping £3.50 per gb. If it is happening on O2 it is almost certainly happening on all of them. I think I will get an unlimited data sim from Meo when we arrive in Portugal and turn data roaming off. Just wanted to let you know.