Controversy on transsexuals’ medical treatment. “I believe I’m proof no man can truly become a woman” warns Leanne.

Leanne is a transsexual who, at 34, had sex reassignment surgery — as it was then called — on the NHS at a clinic in Hove, East Sussex, after years of dressing sometimes as a man and sometimes as a woman. She is now 57 and says that, since then, she has lived in a twilight world...