Free 0800 calls are nothing new...
I thought that some of the mobile operators who used to not charge for 0800 numbers, started to charge a number of years back because people were abusing the system by calling companies on 0800 numbers, who would in turn forward the call to any other number for less that the mobile phone operator.
The operators did try blacklisting specific 0800 numbers, but it then became a game of cat-and-mouse with the cheap(er) call companies constantly changing numbers, so the mobile operators effectively threw the baby out with the bathwater and started charging for all 0800s - quite good for their revenues too.
I wonder if this will start happening again an if so, how BT plan to tackle it?