Llyr grew up in Wales as a farmer's son in a close knit community and is transgender.

Aged 16, Llyr is one of 75 children and young adults to have been referred in 2016 to a specialist NHS clinic as a result of transgender feelings.

We spoke to Llyr's parents and asked them how they dealt with this transitioning process.

Sweet Sixteen: A Transgender Story is on iPlayer

Produced & Directed by Molly-Anna Woods; Video Editor: Helene Daouphars