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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Electrical Hazard Signs
Electrical Hazard Signs
Flammable & Explosive Signs
Flammable & Explosive Signs
Hazardous Chemical Signs
Asbestos Warning Signs
Asbestos Warning Signs
Radiation & Specialist Signs
Temperature Warning Signs
Temperature Warning Signs
Warning flammable gas safety sign with flame symbol
Warning Flammable Gas Sign
Warns of flammable gas hazards to reduce the risk of fire and explosion.
• Alerts people to the presence of flammable gas in the area
• Suitable for industrial sites, storage areas, and gas handling locations
• High-visibility yellow and black design ensures clear recognition
• Available in durable materials for long-lasting performance
• Helps improve safety awareness and prevent ignition risks
£2.26
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Warning flammable liquid safety sign with flame symbol
Warning Flammable Liquid Sign
Warns of flammable liquid hazards to reduce the risk of fire and explosion.
• Alerts people to the presence of flammable liquids
• Suitable for workplaces, storage areas, and industrial environments
• High-visibility yellow and black design ensures clear recognition
• Available in durable materials for long-lasting performance
• Helps improve safety awareness and prevent ignition risks
£2.26
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Warning fire risk flammable safety sign with flame symbol
Warning Fire Risk Flammable Sign
Warns of fire risk due to flammable substances in the area.
• Alerts people to the presence of flammable materials and fire hazards
• Suitable for workplaces, storage areas, and industrial environments
• High-visibility yellow and black design ensures clear recognition
• Available in durable materials for long-lasting performance
• Helps reduce fire risk and promotes safer working conditions
£2.26
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Warning Beware Of Moving Vehicles safety sign for industrial and warehouse traffic areas
Warning Beware Of Moving Vehicles Sign
Warning Beware Of Moving Vehicles Sign alerts pedestrians and workers to the presence of moving vehicles in busy industrial and workplace environments.
• Warns individuals about moving vehicles and traffic hazards
• Ideal for warehouses, loading bays, construction sites, and industrial areas
• High-visibility yellow and black warning design ensures clear recognition
• Available in durable Rigid Plastic (1mm) and Self Adhesive Vinyl
• Helps improve site safety and reduce the risk of vehicle-related accidents
£5.72
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Warning Deep Water safety sign with deep water hazard symbol
Warning Deep Water Sign
Warn individuals of deep water hazards with this Warning Deep Water Sign.
• Alerts people to the presence of deep water and potential drowning hazards
• Ideal for lakes, rivers, docks and waterside locations
• High-visibility yellow and black design ensures clear recognition and readability
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl, and Recyclable Correx ® (4mm)
• Helps improve safety awareness and reduce the risk of accidents around deep water
£9.01
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Warning Corrosive Sign
Warning Corrosive Sign
The Warning Corrosive Sign from is designed to meet UK Safety regulations. It is available in a choice of sizes and materials, including strong 1mm Rigid Plastic, 1mm Rigid Plastic with a Self-Adhesive backing, and a Self-Adhesive Vinyl Sign.
£2.26
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Warning Loading In Progress safety sign with hazard and forklift symbols for warehouses and loading bays
Warning Loading In Progress Sign
Warn staff and visitors of active loading operations with this highly visible warning sign for workplaces and industrial environments.
• Alerts staff and visitors to loading activity hazards
• Ideal for warehouses, loading bays and industrial sites
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps improve workplace awareness and reduce loading-related accidents
£12.31
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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
£12.31
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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
£9.01
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Warning deep excavations safety sign with hazard symbol
Warning Deep Excavations Sign
Warns of deep excavation hazards to prevent accidents and ensure site safety
• Alerts workers and visitors to the presence of deep excavation risks
• Ideal for construction sites, civil engineering projects, and groundwork areas
• Bold black text on yellow background ensures high visibility
• Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Helps reduce risk of falls and supports safer working environments
£4.07
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Warning Men Working Below Sign with yellow hazard symbol
Warning Men Working Below Sign

Alerts workers and visitors to personnel working below ground level or in excavated areas.
• Warns of people working below to help prevent accidents
• Suitable for excavations, basements, construction sites, access routes and work zones
• Bold yellow warning design with clear black text and hazard symbol
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps improve awareness around below-ground work areas
£9.01
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Warning Men At Work safety sign with warning hazard symbol
Warning Men At Work Sign
Warn staff, visitors and the public of active work areas with this highly visible warning safety sign.
• Indicates active work zones to improve safety awareness
• Ideal for construction sites, industrial areas and maintenance zones
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reduce accidents by warning people of ongoing work activities
£6.75
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Warning Site Entrance safety sign with yellow warning symbol
Warning Site Entrance Sign

Warn individuals of potential hazards when entering a site with this Warning Site Entrance Sign.
• Alerts people to hazards at site entry points
• Ideal for construction sites, industrial areas and work zones
• High-visibility yellow and black design ensures clear recognition and readability
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps improve site safety awareness and supports compliance with workplace safety requirements
£6.75
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Warning Site Traffic safety sign with warning hazard symbol
Warning Site Traffic Sign
Warn staff, visitors and drivers of moving site traffic with this highly visible warning safety sign.
• Alerts people to the presence of moving site traffic
• Suitable for construction sites, industrial yards and loading areas
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps reduce accidents by increasing awareness of vehicle movement
£9.01
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