For some transgender men and women – and the campaigners who support them – the updated guidance confirms their worst fears

Stephen Whittle was visiting the Chelsea flower show as a birthday treat with his wife on Thursday afternoon. At around the same time, the updated code of practice from the Equality and Human Rights Commission was published. It confirmed, among myriad updates, that single-sex spaces such as toilets and changing rooms must be used on the basis of biological sex, and that transgender people may not access those that accord with their lived gender.

Among the floral displays, 70-year-old Whittle did not stray from habit. “Of course I used the male facilities, as I have done for the last 50 years. Can you imagine what the guy on security would have said if I’d gone to the ladies?”

Updated code of practice covering England, Wales and Scotland also relates to changing rooms and follows supreme court ruling

• What is the updated EHRC code of practice about and how does it apply?

Single-sex toilets and changing rooms in England, Wales and Scotland must exclude transgender men and women, according to a new code of practice from the equalities watchdog.

But the long-awaited guidance also says that businesses and service providers have to offer practical alternatives such as gender-neutral toilets for people who do not wish to use services for their biological sex.