Hazard Warning Signs

Hazard Warning Signs alert employees, visitors and contractors to potential dangers that may cause injury, illness or property damage. Recognisable by their yellow triangular design, these signs help identify workplace hazards before people enter an area or begin a task.

Also known as warning signs, danger warning signs or hazard alert signs, they are widely used in factories, warehouses, workshops, construction sites, schools, healthcare facilities and public buildings.

Common installation locations include machinery areas, electrical rooms, chemical storage facilities, loading bays, restricted access areas, plant rooms and workplace entrances where hazards need to be clearly communicated.

Available in self-adhesive vinyl, rigid plastic, aluminium and photoluminescent materials, many of our hazard warning signs are manufactured in the UK for excellent visibility, durability and long-lasting performance.

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Subcategories

Electrical Hazard Signs
Flammable & Explosive Signs
Hazardous Chemical Signs
Asbestos Warning Signs
Radiation & Specialist Signs
Temperature Warning Signs
Danger Acid Storage Warning Sign

Acid Storage Warning Sign

Clearly warns people of dangerous acid storage areas to help reduce the risk of accidents and injury.
• Alerts people to the presence of dangerous acid storage
• Suitable for laboratories, warehouses, factories and chemical storage areas
• High-contrast yellow and black design provides clear and immediate recognition
• Available in Rigid Plastic (2mm)
• Helps reinforce awareness of acid storage hazards and encourage appropriate caution
£6.62
Compressed gas GHS label sticker with gas cylinder symbol in red diamond

Compressed Gas Label Sticker

Indicates compressed gas hazards using a recognised symbol for clear identification.
• Alerts people to the presence of compressed gas cylinders
• Suitable for containers, packaging, and workplace environments
• High-contrast red, white, and black design ensures strong visibility
• Self Adhesive Vinyl provides easy application and durability
• Supports safe handling and compliance with hazard labelling standards
£1.62
Warning Mud On Road Sign

Warning Mud On Road Sign

Warning Mud On Road Sign helps alert drivers, workers and visitors to mud hazards on road surfaces.
• Warns of mud on the road to reduce accident risk
• Used on construction sites, farm entrances and site access roads
• Clear yellow warning design with bold black text and symbol
• Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Helps maintain safer vehicle movement around muddy areas
£14.77
Danger Asbestos Approved Respirators Must Be Worn Sign with mandatory respiratory protection symbols

Danger Asbestos Approved Respirators Must Be Worn Sign

Clearly warns people of asbestos hazards and instructs them to wear approved respirators and obtain a permit to work before entering hazardous areas.
• Warns of asbestos hazards and instructs that approved respirators must be worn
• Suitable for construction sites, industrial premises, refurbishment areas and asbestos risk environments
• High-contrast warning colours, bold symbols and clear wording provide strong visibility
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reinforce respiratory protection and permit-to-work requirements in asbestos hazard areas
£6.86
Danger Live Busbars Electrical Warning Sign

Live Busbars Electrical Sign

Clearly warns people of dangerous live busbars to help reduce the risk of serious injury from accidental contact with electrical components.
• Alerts people to the presence of live busbars and associated electrical hazards
• Suitable for electrical rooms, substations and industrial sites
• High-visibility yellow and black design provides clear and immediate recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reinforce electrical safety awareness and reduce accidental contact with live components
£2.71
Danger Explosive Atmosphere EX ATEX Category 1 safety sign with recognised EX hazard symbol

Danger Explosive Atmosphere Sign - EX Atex Category 1

Warn staff and visitors of explosive atmosphere hazards in ATEX Category 1 areas with this highly visible danger safety sign.
• Alerts individuals to the presence of a potentially explosive atmosphere
• Ideal for hazardous zones, industrial sites, refineries and chemical plants
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps improve awareness of explosive atmosphere risks and supports safe working practices
£2.71
Danger Asbestos Zone Respirator Must Be Worn safety sign with warning and mandatory PPE symbols

Danger Asbestos Zone Respirator Must Be Worn Sign

Ensure mandatory respiratory protection in hazardous asbestos areas with this highly visible danger and mandatory safety sign.
• Instructs personnel to wear respirators in asbestos zones
• Ideal for construction sites, demolition areas and contaminated environments
• High-visibility yellow, black and blue design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps maintain safety compliance and reduce exposure to hazardous asbestos fibres
£6.86
Warning Construction Activities In Progress safety sign

Warning Construction Activities In Progress Sign


Alerts people to active construction work and helps reduce the risk of accidents in busy work areas.
• Warns staff, visitors and contractors that construction activities are taking place
• Suitable for construction sites, industrial facilities, workplaces and maintenance areas
• Bold yellow warning design with clear black text for strong visibility
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps promote awareness and safer movement around active work zones
£10.81
Danger 230 Volts Electrical Warning Sign

Danger 230 Volts Electrical Sign

Clearly warns people of a dangerous 230 volt electrical hazard to help reduce the risk of electric shock, serious injury or fatal accidents.
• Alerts people to the presence of a dangerous 230 volt electrical hazard
• Suitable for workplaces, plant rooms and electrical areas
• High-visibility yellow and black design provides clear and immediate recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reinforce electrical safety awareness and reduce the risk of electrical accidents
£2.71
Danger Explosive Atmosphere EX ATEX Category 2 safety sign with recognised EX hazard symbol

Danger Explosive Atmosphere Sign - EX Atex Category 2

Warn staff and visitors of explosive atmosphere hazards in ATEX Category 2 areas with this highly visible danger safety sign.
• Clearly identifies areas where explosive atmospheres may occur
• Suitable for industrial sites, factories and hazardous zones
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps maintain ATEX compliance and improve workplace safety awareness
£2.71
Danger Asbestos Hazard Sign with yellow and black warning symbol

Danger Asbestos Hazard Sign

Danger Asbestos Hazard Sign clearly warns people of the presence of hazardous asbestos materials to help prevent exposure and disturbance.
• Alerts people to the presence of an asbestos hazard
• Suitable for construction sites, refurbishment areas and industrial premises
• High-contrast yellow and black design provides strong visibility and clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reinforce asbestos hazard awareness and safer site management
£2.71
Warning Electric Fence Electrical Hazard Sign

Warning Electric Fence Electrical Sign

Clearly warns people of an electric fence and potential electrical hazard to help reduce the risk of accidental contact.
• Alerts people to the presence of an electric fence and associated electrical risk
• Suitable for farms, agricultural land and restricted perimeters
• High-visibility yellow and black design provides clear and immediate recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reinforce electrical safety awareness and reduce accidental contact with electric fencing
£2.71