The doctor who performed the orchiectomy on Cowell was this transman:
https://en.wikipedia.org/wiki/MichaelDillon
The doctor who performed the penectomy was Harold Gillies.
https://en.wikipedia.org/wiki/HaroldGillies
'Because operations to change gender were deemed controversial,[32] Gillies falsified Dillon’s condition in order to be able to perform surgery without scrutiny, diagnosing Dillon with acute hypospadias.[35][c] From 1946, during his holidays from medical school, Dillon travelled to visit Gillies at Rooksdown House in Basingstoke for a series of surgeries.[4] The phalloplasty surgery involved using flaps of skin from Dillon's legs and stomach to form a penis. The surgeries led to infections and difficulty walking, which Dillon would falsely claim were wounds suffered during the bombing raids of Bristol'
I seem to see a pattern emerging.