British man gives birth to baby after finding sperm donor on FacebookHaydon Cross. Pic/YouTube

A 21-year-old man has become the first in Britain to give birth after he put his sex transition on hold to get pregnant by a sperm donor who he found on Facebook.

In September she got pregnant by a sperm donation which she found on Facebook and just because it shut down, she didn't have to pay.

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Hayden Cross gave birth to a girl by caesarean and has named his daughter Trinity-Leigh who he calls his 'angel'. She was born on June 16 at Gloucestershire Royal Hospital.

According to The Sun, Cross had been living legally as a man for three years and was already part-way through hormone treatment to transform from a woman to a man. But the full transition was paused after the UK's state- funded National Health Service (NHS) refused to carry out a 4,000-pounds process to freeze his eggs -- which he hoped would enable him to have children in the future.

Following the birth, Cross now plans to return to complete his gender realignment as soon as possible.

Cross was born a girl named Paige, 21 years ago. She who used to work for Asda and in a clothes shop and now aims to find a job once the baby is aged one.

Gender transition treatment costs the NHS on average 29,000 pounds per patient.

Thomas Beatie became the first man to give birth in the US in 2008.