giffgaff’s Data Boost SIM-only plans now come with up to 200% more data. Deals include 75GB for £10, 150GB for £12, and 300GB for £15.

If you’re looking for a new SIM-only plan that gives you lots of data, giffgaff is currently offering ‘data boost’ SIMs such as 75GB data for £10, 150GB data for £12, and 300GB data for £15. These deals are available on an 18-month contract. There are also one-month rolling ‘data boost’ plans available to buy.
All of giffgaff’s data boost plans come with built-in flexibility, allowing you to change your plan over time. There’s also no credit check needed to sign up, plus inclusive EU roaming (up to 5GB per month).
In this article, we’ll look at giffgaff’s data boost offers which are available until the 18th May 2026. We’ll also look at the key features included on their plans and how you can keep your current phone number when you move to giffgaff.
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