Thanks, do you think it's something that they will introduce in the future as other tv providers offer this service?
As the recordings are stored on the box, and cannot be transferred for copyright reasons, then I doubt that BT will even consider it.
I'm surprised at that as if I've read it correctly you can do this if you have EE tv.
That was the EE Recordings to Go which they did offer for a few months however they (EE) withdrew that feature in June
following discussions with their content rights-holders.