A fire inspector visiting a small warehouse in the Midlands last year found a fire extinguisher behind a stack of pallets, a fire exit with no illuminated sign above it, and a "fire action" notice curling off the wall from a previous tenant with the wrong emergency number on it. None of that started a fire. All of it turned a routine visit into an enforcement notice, because signage is one of the easiest things for an inspector to check and one of the fastest ways to prove your fire risk assessment exists only on paper, not in the building. Get this wrong and you are looking at an improvement notice at best, a prohibition notice closing part of the premises at worst, and either one makes your buildings insurance very difficult to defend if a claim follows.
What the Law Actually Requires
Two pieces of law sit behind every fire sign in a UK workplace. The Regulatory Reform (Fire Safety) Order 2005 (RRO 2005) makes the "responsible person" (usually the employer, owner or occupier) provide "general fire precautions," which explicitly covers signs marking escape routes, firefighting equipment and hazards. The Health and Safety (Safety Signs and Signals) Regulations 1996 then sets the technical detail for what those signs must look like, in Great Britain; Northern Ireland runs the equivalent Health and Safety (Safety Signs and Signals) Regulations (Northern Ireland) 1996 instead.
Since section 156 of the Building Safety Act 2022 took effect on 1 October 2023, every responsible person in England and Wales must record their fire risk assessment in writing, whatever the size of the business. The old exemption for employers with fewer than five staff is gone. Your signage decisions, what you have, where it is and why, are meant to come directly out of that written assessment, not from whatever the previous occupier left on the walls.
If your premises is in Scotland, the RRO 2005 does not apply at all; the duty instead comes from Part 3 of the Fire (Scotland) Act 2005 and the Fire Safety (Scotland) Regulations 2006, with the same underlying idea of a responsible person and a suitable assessment. Northern Ireland runs the Fire Safety Regulations (Northern Ireland) 2010 alongside its own version of the signage regulations noted above. The sign colours, pictograms and standards described below are used consistently across all three, even though the legal duty to provide them is written into different legislation depending on which nation you are in.
The British Standards Behind the Signs
The two standards that actually define what a compliant sign looks like are BS 5499-4:2013, which covers escape route signing, and BS 5499-10:2014+A1:2023, which gives broader guidance on selecting, positioning and maintaining safety and fire signs. Both are built around BS EN ISO 7010, the international standard for the pictograms themselves: the green running-man exit symbol, the red fire extinguisher pictogram and so on. For any new signage, work to BS EN ISO 7010 pictograms; older BS 5499 wording-only signs already installed do not need ripping out, but do not buy new ones in that style.
Colour is not decorative, it is coded. Green with white symbols or text marks safe condition signs, meaning escape routes, exits and assembly points. Red marks firefighting equipment. Yellow with a black border and symbol marks a fire hazard warning. An inspector who sees a fire extinguisher marked with a green sign, or an exit marked in red, will treat it as a sign your fire risk assessment was never properly followed through into the building.
Where Signs Actually Need to Be
Every escape route needs signing at each point where the way out is not obvious, particularly at junctions, direction changes and any door that looks like an exit but is not one (mark those "not an exit" clearly). Every escape door itself needs a running-man sign, and where a route is long, sighted along it in reasonable enough intervals that someone unfamiliar with the building is never in doubt which way to go. Firefighting equipment needs its own sign directly above or immediately next to it, not down the corridor where it might apply to something else.
Every workplace also needs a fire action notice near final exits and in communal areas, stating what staff and visitors should do on discovering a fire and on hearing the alarm, the assembly point, and who to call. If your assembly point has moved, or your building's layout has changed since the notice went up, that notice is now inaccurate and worse than useless in an emergency. It is worth pairing your signage review with checks covered in our guides on fire extinguisher requirements for UK businesses and how many fire wardens your workplace needs, since signage, equipment and people all get assessed together.
If you occupy part of a shared building, such as a unit in a business park or a floor of an office block, check your lease before assuming signage in the communal areas is someone else's problem. The RRO 2005 puts a duty on anyone with a degree of control over part of the premises, which in a multi-let building can mean the landlord is responsible for signage in shared stairwells and corridors while each tenant is responsible for signage inside their own demise. Get this split confirmed in writing, because "I thought the landlord covered that" is a common and expensive gap when an inspector visits.
Photoluminescent Signs and Emergency Lighting
Photoluminescent (glow-in-the-dark) signage is not a legal requirement everywhere, but your fire risk assessment should consider it wherever emergency lighting under BS 5266 might fail or where a route passes through an area that loses all ambient light in a power cut. A sign that only works when the lights are on is not much use in the exact scenario it exists for. Larger premises, basements and any escape route without windows are the places this comes up most often in practice.
This is also where signage and emergency lighting decisions genuinely have to be made together rather than separately, because an illuminated exit sign fed from the emergency lighting circuit does a different job to a static photoluminescent one, and your assessment needs to say which you are relying on and why.
Keeping Signs in Good Condition
A sign that has faded, been painted over, or had shelving stacked in front of it no longer meets the standard it was installed to, even if nobody has touched the sign itself. Photoluminescent signs lose their charging ability over time and with repeated exposure to dirt or grease, particularly in kitchens and warehouses, so build a visual check into whatever routine you already use for testing fire extinguishers or emergency lighting rather than treating signage as a one-off installation. There is no fixed statutory testing interval for signage the way there is for extinguishers or emergency lighting, but your fire risk assessment should specify a review frequency and someone responsible for acting on it, and that record is exactly what an inspector will ask to see if a sign turns out to be missing or obscured.
What Inspectors Actually Check
Fire and rescue service inspectors, and in some sectors the local authority, will typically walk your escape routes exactly as a stranger would, checking that signage is visible, correctly coloured, unobstructed, and consistent with what is actually behind each door. They will also cross-check your fire action notices against your current assembly point and named fire wardens, and ask to see your written fire risk assessment to confirm the signage in front of them matches what the document says should be there. A mismatch between the paperwork and the building is one of the fastest routes to enforcement action, because it suggests the assessment was written once and never revisited.
Fire door inspection duties, covered in our separate guide on fire door inspection duties in commercial premises, get checked at the same time, since a fire door with no "fire door keep shut" sign is treated the same way as missing exit signage: a document that was not translated into the actual building.
Next steps
Signage is one of the cheapest fixes in fire safety and one of the most commonly missed, precisely because it feels too simple to need a proper assessment. It does. FRASafe's small business fire risk assessment walks you through every area the RRO 2005 requires, completed online in 30 to 45 minutes for £45, and will tell you exactly what signs your specific premises needs and where. Start yours at frasafe.co.uk/small-business.