Do the sums, properly.
5.8 Bn would be £90+ per person, per year, if every single resident of the UK (including the babes in arms and the very elderly) are included.
That's more than I spend annually on mobile phone charges.
They say 3.5M people haven't switched in the last three years, and the average saving if you switch is £176. So if all those people switch, and make that average saving, they save a total of £616M - but USwitch's calculator seems to make that nine times as much. I don't think I'd want to trust a switching site using that sort of arithmetic!
And a lot of those non-switching people, like me, don't even pay that much, so they won't need to switch. Or they will live somewhere (again like me) where outside any operation will do, but the location of the local tower serving several networks is such that indoors I have no coverage on most operators.
Typical hyped-up crap statistics.
And where's all that 'overpayment' going? Is it all to profits distributed by the companies? Or is it actually supporting investment in he networks, and covering the running costs? If even some of it is not clear profit (and I doubt that all that much of it is), then the only effect of everyone switching is that base prices have to go up - or people go out of business, and networks steadily deteriorate - which isn't good for anyone. It's a fundamentally flawed, short-termist position.
Not that people shouldn't switch when it suits them - but this insistence on switching as a Universally Good Thing is only of benefit to the switching site owners. How much are we overpaying *them*, I wonder, on the commission they get from each switcher?