Safety Signs Regulations UK: Which Signs Your Workplace Legally Needs

The Legal Framework

The Health and Safety (Safety Signs and Signals) Regulations 1996 implement EU Directive 92/58/EEC in the UK and set out the requirement for safety signs in workplaces. The Regulations require employers to use safety signs where there is a significant risk that cannot be adequately controlled by other means, and where a sign can help reduce that risk further.

Private No Public Right of Way Safety Sign

Signs are a supplementary measure — not a substitute for eliminating or controlling hazards through engineering or procedural controls. Placing a warning sign near a hazardous machine does not remove the need to guard it; signs work alongside other controls in the hierarchy of risk management.

The design standards for safety signs in the UK follow BS EN ISO 7010, which provides a harmonised set of symbols used across Europe. Using standardised symbols — rather than text-only signs — means signs are understood regardless of the reader’s language, which is particularly important in diverse workplaces.

The Five Categories of Safety Sign

Prohibition Signs (Red)

Prohibition signs tell people not to do something. They feature a red circle with a diagonal bar over a black symbol on a white background. Common examples include:

  • No smoking
  • No entry
  • No unauthorised access
  • Do not use mobile phones

Warning Signs (Yellow)

Warning signs alert people to a hazard or danger. They use a yellow triangle with a black symbol and black border. Common examples include:

Mandatory Signs (Blue)

Mandatory signs require a specific action. They feature a blue circle with a white symbol. Common examples include:

  • Hard hat must be worn
  • Safety footwear must be worn
  • High-visibility clothing must be worn
  • Wash your hands
  • Eye protection must be worn

Safe Condition Signs (Green)

Safe condition signs indicate escape routes, emergency exits, first aid facilities, and assembly points. They use a green rectangle with a white symbol. Common examples include:

  • Fire exit (running man with directional arrow)
  • First aid point
  • Emergency assembly point
  • Emergency shower or eyewash station

Fire Equipment Signs (Red)

Fire equipment signs indicate the location of firefighting equipment and fire alarm call points. They use a red rectangle with a white symbol. Common examples include:

  • Fire extinguisher
  • Fire hose reel
  • Fire alarm call point
  • Fire blanket

When Are Signs Legally Required?

The 1996 Regulations require signs where risks cannot be adequately reduced by other means. In practice, this means conducting a risk assessment and asking whether the hazard can be eliminated, or the risk reduced to an acceptable level through controls alone. If a residual risk remains that a sign can meaningfully address, a sign is required.

The Regulations specifically cover: warning signs, prohibition signs, mandatory signs, emergency escape and first aid signs, fire safety signs, and supplementary text panels used with these signs.

Fire Exit Signs: Illumination Requirements

Fire exit and escape route signs have additional requirements under the Regulatory Reform (Fire Safety) Order 2005 (RRO). Where normal lighting could fail and workers might be unable to see exit signs, signs must be either internally illuminated (powered) or photoluminescent (glow-in-the-dark, charged by ambient light). This requirement applies to most commercial premises.

Photoluminescent signs must be placed where they receive sufficient ambient light to charge effectively. If a location is poorly lit, illuminated signs are more reliable. The responsible person under the RRO must assess this as part of their fire risk assessment.

No Smoking Signs

The Health Act 2006 and the Smoke-free (Premises and Enforcement) Regulations 2006 require no-smoking signs to be displayed in enclosed workplaces and vehicles used by more than one person. The sign must be at least A5 in size and display the no-smoking symbol. There must be at least one sign at each entrance to the premises. Failure to display the required sign is a fixed-penalty offence.

Maintaining Your Signs

The 1996 Regulations require that signs are maintained in a condition where they remain effective. In practice, this means:

  • Signs must be kept clean and legible — a dirty or faded sign provides little protection
  • Damaged signs (cracked, bent, obscured) must be replaced promptly
  • Signs should be checked as part of regular workplace inspections
  • Illuminated signs should be tested regularly to confirm the lighting functions correctly
  • Signs that no longer correspond to the current hazard should be removed — an outdated sign can cause confusion and undermine the credibility of the signage system as a whole

Size and Positioning

Signs must be large enough to be easily seen from the relevant approach distance. The appropriate size depends on the distance from which the sign needs to be read and the ambient lighting conditions. As a general guide, larger signs or internally illuminated versions are needed where viewing distances are long or lighting is poor.

Signs should be positioned at or near the hazard or action point they relate to, at eye level where possible, and in a location where they are not obscured by equipment, shelving, or other signs. A sign that cannot be seen from the relevant approach point provides no protection at all.

Browse our full range of safety signs covering all five sign categories, or explore our broader warehouse safety equipment for controls that complement your signage.

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