Originally Posted by
alan19
Are there any sims that work in both London and Paris? Kind of assuming not, but I sort of remember an Orange UK last time I was in London.
Sure, almost any card bought from either country will roam in the EU - there is a maximum imposed on roaming charges and it's pretty high (especially data, which can be exorbitant).
It's probably a good way to go if one will only visit a country for a few days, saves the hassle of looking for a local SIM in that second country.
Three UK (and Giffgaff, which is an MVNO of 3 I believe) have great UK rates, FWIW.