Escape Signs in Hospitals

[Izan FSO]

Having a bit of a senior moment (happening more just lately) when was the requirement for hospital signs to include the "flame" graphic symbol introduced and where is that identified.

I have searched the current HTM 05 series but do not have ready access the old HTM's they replaced.

Any pointers appreciated

[AnthonyB]

HTM 65 - 'Signs', superseded by Wayfinding - EFFECTIVE WAYFINDING AND SIGNING SYSTEMS GUIDANCE FOR HEALTHCARE FACILITIES