A lighting system for an aircraft cabin includes an electrical light source and a photoluminescent light source. The electrical light source is provided at or near a ceiling of the aircraft cabin and the photoluminescent light source is arranged at or near floor level. The photoluminescent light source defines a path along which passengers can move to an exit and is located in an area that receives a light output from the electrical light source to charge the photoluminescent light source. The electrical light source is adjustable to alter the orientation of the light source to concentrate the light output in the area of the photoluminescent light source to enhance charging of the photoluminescent light source by the electrical light source.