Margaret Hopwood
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Margaret Hopwood [1] was a companion of the Fourth Doctor.
She was captured by the Nine and placed in a prison along with various other companions. She could be heard bemoaning the fact that she was not young any more, and begged to be let out. (AUDIO: Companion Piece)
Behind the scenes
Companion Piece never states which Doctor she traveled with but she will appear alongside the Fourth Doctor in series 11 of the Fourth Doctor Adventures.