The design of emergency lighting holds significant importance in custodial settings. Consider the paradox: the need to facilitate escape in a facility primarily designed to confine individuals.
Typically emergency lighting standards assume one of two scenarios: stay or go. Staying put is understandably the preferred option. Yet emergency lighting requirements differ depending on the type of custodial facility.
In prison association areas, back of house, education, workshops and indoor recreation areas emergency lighting is a requirement. However, the lux levels vary and are listed in the MoJ Technical Standards.
Emergency lighting is required in, for example, holding cells in magistrates courts and police custody suites. However, in a typical prison cell there is no emergency lighting. This is on the basis that, provided there is no risk to life, the safest place to hold a prisoner is behind a locked door.
Luminaires specified in custodial emergency applications have to work with a number of different power sources. This includes uninterrupted power supplies (UPS), central battery and integral 3 hour emergency – or a combination of the three.
In addition, emergency lighting for custodial applications must have increased levels of vandal resistance and ingress protection.
Technical Support
Many general custodial areas can be lit to BS 5266‑1:2025, but the MoJ and Home Office have stringent standards requiring enhanced emergency lighting for cells, high-risk areas, secure doors/gatelines and escape routes.
This often means higher illuminance levels and specific light distributions to achieve the required lux at defined task heights. For example, the MoJ and Home Office require 15 lux at secure door and gate positions on evacuation routes to allow staff to operate locks safely. Meeting this standard requires purpose-designed luminaires (such as our Gateline) rather than adapted standard fittings.
When upgrading from fluorescent to LED, light distribution can change significantly. Always confirm that new LED luminaires or gear trays maintain compliant emergency light levels.
Testing and maintenance must also be clearly defined. BS 5266‑1:2025 requires a monthly function test (brief power cut to confirm operation) and an annual 3-hour duration test (to verify battery performance). Results must be recorded, and any failures rectified with documented corrective action. We offer automated systems, such as DesignMesh and DesignPath, which help you meet all your regulatory obligations.
Best Practice Lighting Guide
Our lighting guide highlights common custodial applications, emphasising principles of effective lighting. We explore the advantages of sturdy construction, adherence to standards, and tailored design needs, such as anti-ligature luminaires for “Ligature‑resistant” cell usage. Download your copy by clicking the button below.
