Often over looked emergency lighting can prove life saving in a power failure situation. It is there to light the escape routes and final means of exit.
Whether bespoke or part of the main lighting system, emergency lighting charges its batteries from the mains and must operate for a designated time period in the event of power failure.
Many buildings have emergency lighting installed but have not subsequently had it maintained. Batteries and tubes do not last forever, it is an essential part of fire protection and now a legal requirement to ensure it is fully operational.
Churches Fire Security design, install and maintain emergency lighting systems in accordance with BS5266.