Thanks for the heads up, Three has been awesome in the UK btw, I highly recommend them as the all you can use data is perfect!

As for France, I'm a little discouraged seeing that it's so difficult to find a SIM card with a decent data plan, my backup is to get a Vodafone SIM card here in the UK which is 2 pounds per day for 25MB.

I'd love unlimited data or at least more data for France but it feels like I'm running out of options.