Mermaids CEO Susie Green has left the charity after six years in charge.
Chair of Trustees Belinda Bell said: “The Trustees are very grateful to Susie for everything she has done over the last six years to support trans, non-binary and gender-diverse young people and their families, and to build Mermaids into the organisation it is today.
“We wish her all the best for the future.”
An interim CEO will be appointed shortly.