First, the bad news: This is a time-sensitive offer. Though FreedomPop tells us it might decide to widen the window, as it stands this deal will disappear towards the middle of next week -- to be replaced by the usual 2GB top-tier plan. Usually we'd ignore such a transient promotion, but then, there's the good news: The 10GB tariff itself is permanent. That means as long as you jump on the deal before it expires, unlimited calls, texts and all that data will be yours for £10 per month.

If that sounds like insanely good value, you're right -- the only minor inconvenience being FreedomPop's reliance on mobile apps to handle calling and messaging (it's primarily an "over-the-top," data-supported service, you see). Take a look around and you'd be hard-pressed to find anything comparable. Among the four major carriers, for example, Three's £11 per month deal is the best around, and that only provides 200 minutes, unlimited texts and 500MB of data.