A convicted paedophile treated by the UK’s top transsexual therapist has expressed regret after undergoing gender reassignment.

The former patient, is one of five complainants at a General Medical Council hearing accusing Dr Russell Reid behaved inappropriately towards five transgender patients by recommending sex change treatments too quickly between 1984 and 2003.

The male to female transsexual has gone back to living as a man, The Guardian reports, after regretting gender reassignment in 1996.

The patient, known as patient C, admitted that he had never cross dressed and said he had at first hidden his conviction from Dr Reid.

Upon discovering that patient C was a paedophile, Dr Reid continued the treatment regardless of the revelation, the hearing was told.

Patient C said he only wanted to become a woman to win back his boyfriend who had sought a “motherly figure” for his children.

Dr Reid denies the charge of misconduct. He claims to have given full consideration to the industry guidelines as part of a thorough assessment of each patient’s needs, but that inflexible guidelines were not in the best interest of some patients.

The GMC disciplinary hearing continues.