Fire exit sign regulations UK: illumination, height, and placement

The legal framework

Fire exit signage in UK non-domestic premises sits at the intersection of three regulations:

• The Regulatory Reform (Fire Safety) Order 2005 ("RRO" or "Fire Safety Order") makes the responsible person — typically the building owner, occupier, or employer — accountable for fire safety. Article 14 requires safe routes for escape and Article 15 requires emergency lighting where necessary.
• The Health and Safety (Safety Signs and Signals) Regulations 1996 require that safety signs comply with the relevant standard — currently BS EN ISO 7010 — including escape route and fire exit signs.
• BS 5499-4:2013 is the UK code of practice for "Safety signs — Code of practice for escape route signing". It sets out the practical guidance on placement, height, viewing distance, and how to chain signs along an escape route.

The combined effect: you must have escape route signs, they must be the right format (BS EN ISO 7010), they must be readable in normal and emergency conditions, and they must be placed where escape can actually be navigated under stress. A fire risk assessment determines the specific requirements for your premises.

Choosing illumination: photoluminescent or electrically illuminated

Both photoluminescent and electrically illuminated fire exit signs are compliant with UK regulation. The choice is driven by the fire risk assessment, which considers:

• Building size and complexity — larger buildings with longer escape routes typically require electrically illuminated signs supported by a full emergency lighting system. Photoluminescent signs alone may not provide the consistent visibility needed.
• Occupancy — high-occupancy buildings (offices over 60 people, hotels, hospitals, theatres) almost always need electrically illuminated signs.
• Ambient light during normal operation — photoluminescent signs need adequate light to charge. Permanently dim areas (cellars, plant rooms, rear corridors) cannot rely on photoluminescent alone.
• Risk profile — sleeping accommodation, healthcare settings, and premises with at-risk occupants generally trigger more stringent illumination requirements.
• Existing emergency lighting — if a premises already has emergency lighting that adequately illuminates fire exit signs during a power failure, the signs themselves may not need to be illuminated.

Many UK buildings use a combination: photoluminescent signs as the primary wayfinding, with electrically illuminated signs at critical decision points (final exits, complex junctions) backed by emergency lighting throughout the escape route.

Mounting height and placement

BS 5499-4:2013 sets out the practical placement rules:

• Mounting height: top edge between 1.7m and 2.4m above the floor for standard interior placement. Above doors, just above the door frame.
• Viewing distance: sign size must be appropriate for the maximum distance from which it needs to be readable. As a rule, the sign's character height should be at least 1/200 of the maximum viewing distance. Standard sizes: 200mm × 100mm for short distances (5-10m), 400mm × 200mm for medium (10-25m), 600mm × 300mm for long (25-40m).
• Continuous visibility: at any point on the escape route, at least one fire exit sign should be in line of sight, indicating direction to the next sign or to the final exit.
• Final exit: a sign directly above each final exit door, both inside and (where appropriate) outside the building.
• Junctions and direction changes: a sign at every change of direction, every junction, and at any point where the route is not immediately obvious.
• Floor-level signs: in high-smoke-risk environments (e.g. hotels, sleeping accommodation), supplementary low-level signs at 0.15-0.45m above the floor are recommended. Smoke rises, so signs above eye level can become invisible while floor-level signs remain readable.

How many fire exit signs do I need?

There is no fixed minimum — it depends on the building. Your fire risk assessment will determine the specific count. Reference points:

• Small office (single floor, ≈10-20 staff): 8-15 signs typically
• Mid-size office (2-3 floors, 50-150 staff): 25-60 signs
• Large building (warehouse, hospital, multi-storey commercial): 100s of signs, often a planned signage scheme prepared by the architect or fire engineer

Old vs new fire exit pictograms

BS EN ISO 7010 superseded the older BS 5499-1 pictograms in 2013. The current standard pictogram is the green-and-white running-man with directional arrow that most people recognise. New installations should always use the current BS EN ISO 7010 format. Existing pre-2013 signs can usually remain in place until they reach end of life or are replaced, unless a fire risk assessment specifically identifies them as inadequate.

Maintenance and inspection

Whatever solution you install, it needs to keep working. Recommended inspection intervals:

• Photoluminescent signs: visual inspection every 6 months. Check for fading, damage, dirt accumulation that reduces light absorption. Replace if luminance has degraded.
• Electrically illuminated signs: monthly functional test (typically by simulating a power failure for 30 seconds), annual full discharge test. Battery replacement typically every 3-4 years. Records must be kept and made available to the responsible person.
• All signs: annual review as part of the fire risk assessment. Building changes (new partitions, repurposed rooms, blocked routes) frequently invalidate the existing signage scheme.

Browse fire exit signs

Direct Signs supplies fire exit signs across all materials and formats:

• Standard fire exit signs — green-and-white running-man with directional arrows
• Photoluminescent fire exit signs — glow-in-the-dark options
• Full fire safety signage range — including fire equipment, fire action notices, and assembly point signs