While transgender people have become much more visible in recent years, our numbers are harder to quantify. In 2011 GIRES reported that:
1% of […] employees and service users may be experiencing some degree of gender variance. At some stage, about 0.2% may undergo transition.
However, those figures were based on samples and estimates, and the GIRES research was completed eight years ago. Society has since moved on, and reliable data is needed, not least to inform the future needs of transgender people for specialist healthcare services.