Unfortunately with satellite and cable TV you are stuck with the channels they give you - it's not like a conventional radio that can tune to any chosen frequency. Somehow I doubt that GMR is likely to be available, as it isn't 'mainstream' enough.

There's always an alternative... someone who is able to receive it could record the programme and send it to you... though there are copyright issues which need to be considered.

The BBC aren't archive recording the programme for economic reasons!