OK, this one involves you submitting your bills for redemption, but it can all be done online so it’s not that big of a task.
You get a massive 100GB of data plus unlimited everything else with Vodafone on this SIM-only deal. It’s normally £20 per month for that, which is £240 over the year. However, if you do this mobiles.co.uk offer, you can get it for a mere £13 after redemption.
Not only that, but if you use the code “10AUTO” at the checkout, you get another £10 off the new yearly sum, making it just £12.16 every month for a massive 100GB! Go on, you can’t say no to that.