Really the point of my post is that you can phone British freephone numbers FREE from outside the UK.

No need to use the load ( if any) on your phone, which would normally charge you for 08O0s dialled from abroad.

It can be done using Skype. No SIM required, only internet connection.... which I have in my apartment.

I also have Viber, but have no idea if you can phone free in the same situation.