The "As I Roved Out" voice was Sara Makem.

The "As I Roved" series whilst interesting I don't think was mega important. The important thing was the recordings from which the material was taken. As far as I am aware these are with the British National Sound Archive/Topic and are currently in the process of being turned into a Topic Series.

(I am not definitive on this but I am fairly sure that is what the current state of play is).