Holidaymakers from the UK could experience significantly slower mobile broadband speeds if they travel to another EU state, new figures suggest.
According to Ookla, the average local mobile download speed in the UK is 26.1Mbps.
However, this falls to 21.08Mbps when roaming - a fall of 19.4 per cent.
Figures also showed that the average download speed for an EU citizen in their home country is 30.7Mbps.
If a person switches on data roaming and crosses a border, the average is 16.6 per cent lower at 25.50Mbps.
Interestingly, the figures showed that for some EU citizens, average download speeds actually go up when they go abroad.
For instance, Portuguese travellers saw speeds go up by 3.7 per cent, while Estonians saw a 7.1 per cent increase.
Meanwhile, download speeds for Italians went up by 15.4 per cent when they were roaming.