Exit Signs

Every doorway or other exit providing access to a means of escape, other than exits in ordinary use, should be provided with an exit sign. Installation of signs conforming to British Standard 5499 will satisfy this requirement.
Illumination of signs
Exit signs should be legible at all material times. In premises where emergency lighting has been considered necessary for means of escape purposes, such signs should be illuminated by the emergency lighting supply in the event of a failure of the normal lighting. Any of the following methods are considered suitable :

• lamps external to the sign but providing adequate illumination of it
• lamps contained within the sign (internally illuminated signs), or
• luminous signs requiring no external power source.