Treaty of Roam finally in ashes: O2 cracks, joins rivals, adds data roaming charges for heavy users in EU

That's £3.50 per GB for anything over 25GB
Updated We didn't see this on the side of a bus. Five years to the day that Britain heard the results of the Brexit referendum, O2 has caved as the last of the UK's Big Four networks to re-introduce roaming charges in Europe for its customers.…