While good advice on how to obtain a VPN for say torrenting, this won't really add anything over TOR. Modern anonymity breaks generally work by getting code to run on your local system, and extra layers of transport wrapping won't really change that.
> if absolutely necessary to be done in those locations use cash bought 3G
First, you should assume that phone companies are indefinitely retaining precise location logs (after all, they are historic state surveillance organs). Second, lesser police will have no problem getting a rough location and then using something like a stingray to hone in on your location.
There is no "absolutely necessary". Either the threat model is low enough to do it from your standard connection (like casual downloading), or you're going to have to leave the house. The one exception is finding some wifi you can access with a directional antenna, and even that you're most likely going to develop lazy opsec that will support you eventually being direction-found from the AP.
Of course this level of paranoia doesn't really apply to your average web browser, and they should take the easier steps to preserve their own anonymity against commercial surveillance. We need a lot more of this.