By way of clarification: the fact that the beeb appears to be disinterested in recovering any of these recordings, regardless of quality, source etc, etc., legally, copyright still rests with the BBC. Speaking personally, if someone 'discovers' 'The Halliard' by virtue of one of these downloads, I would be more than happy, providing the recording was for personal use only. Anyone seeking to exploit these recordings commercially would, almost certainly, have to apply to the BBC for a licence. I speak from personal experience.
                                        Nigel Paterson, mandolin, 'The Halliard'.