Not sure if anyone has seen this before, but there's a programmed called "Age 8 and Wanting A Sex Change'. The synopsis given on one tv guide website is as follows -
"As experts consider a review of UK guidelines for treating transgender children, this film follows several youngsters in America, where hormone blockers can be prescribed to prevent the onset of puberty, followed by medication to change gender. Eight-year-old Kyla was born a boy, but reveals he is preparing to attend school dressed as a girl, and 16-year-old Chris shares her experience of beginning testosterone treatment at the age of 14".
It will be repeated at 10pm on Channel Four +1.