Former Paedophile Information Exchange (PIE) chairman Tom O'Carroll told ITV News he is "confident" Harriet Harman was aware the group was represented on a gay rights sub-committee in the late 1970s.
O'Carroll told UK Editor Lucy Manning he did not think Harman had any involvement with PIE "directly or indirectly", adding, "except through her knowledge of the fact that the organisation had a presence within the NCCL" sub-committee.
He said: "She presumably knew that we were affiliated with the NCCL and must have known, I think, that a representative of PIE - for a long time that was myself while she was there - was on the gay rights sub-committee.
"She must of known that, I am confident, because she had regular discussions with her staff, including the person who presided over the gay rights sub-committee, and that person would have talked to her about the proceedings of the committee from time-to-time I'm sure".
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