Prof. Caroline Watt of the Koestler Parapsychology Unit has written about a fraudulent psychokinesis subject, based on an article in the SPR's Journal by Deborah Delanoy, who tested the claimant with Julie Milton. Prof. Delanoy later became president of the SPR and currently chairs the Society's Research Grants Committee.
Prof. Watts' blog post can be found here:
https://koestlerunit.wordpress.com/2017/08/22/work-with-a-fraudulent-pk-metal-bending-subject/