Kiszko's defence team, led by Waddington, made significant mistakes. Firstly, they did not seek an adjournment when the Crown delivered thousands of pages of additional unused material on the first morning of the trial. Then there was the inconsistent defence of diminished responsibility which Kiszko never authorised, on the grounds that the testosterone he was receiving for his hypogonadism might have made him behave unusually. Kiszko's endocrinologist strongly disagreed with this theory, and if called to testify, would have said that his treatment could not have caused him to act in such a way that would make him carry out a murder. He was never called.