If you're looking for a data-only sim with a hefty amount of allowance, chances are you won't do better than this offer. EE are doing a limited-time promotion where buying their £10 data pack will quality you to get 100GB of data for two months - that's 200GB in total. As the website states, "When your SIM arrives, just top up to start your Data Pack giving you 1GB 4GEE Data, 50 minutes and 50 texts. Then just text 100GB to 150 to enjoy all that extra data!" You will also enter a competition to win 2 tickets to this year's Glastonbury Festival. The offer expires at the end of May. Thanks to m5rcc @ HUKD!