fire escape route markings

[bevfs]

Good morning  all,
Is there a specific British standard,or (category/section) for fire escape route floor markings?
I may be wrongly assuming there is, as there is virtually a  British standard  for almost everything else

[AnthonyB]

Floor markings are usually part of photoluminescent way marking systems for which BS ISO 16069:2017 "Graphical symbols. Safety signs. Safety way guidance systems (SWGS)" exists.