Aside from these outstanding prices for the data on offer, Giffgaff’s plans are attractive thanks to being one month rolling contracts that you can cancel at any time. You can also still change your goodybag each month, and the network will still tell you if you could be spending less.

Giffgaff also says that it will continue to add 1GB data to its £10, £12, £15 and £20 goodybags after customers purchase their third. The extra 1GB is added to plans if a person runs out of data that month.

These prices and add-ons make Giffgaff an even more competitive force in the UK mobile market where stiff competition between SIM-only providers continues to drive prices down. With prices like this, there’s little reason to get into a pricey 12 or 24 month SIM plan with one of the big four operators.

Check out Giffgaff’s plans here on its website

We also round up the best SIM-only deals each month right here.