We have a range of bolt-ons called 'Data Boosts' which you can use to temporarily provide additional data at a cost lower than standard additional data charges.
You can boost your data any time you want from once-per-month options of 1GB, 2GB, 5GB or any combination, to provide a maximum allowance of 8Gb per calendar month.
If, for example, you've added and used a 1Gb Data Boost your options for the remainder of the calendar month would be 2Gb, 5Gb or 7Gb.
To add a Data Boost from your my.plan dashboard and provide additional, reduced cost, temporary UK/EU data, go to:
PRODUCTS > DATA > DATA BOOSTS > BOLT ON/DATA BOOSTS > [select user] > ADD