Warning Signs

Hazard Safety Signs warn employees, visitors and contractors about potential dangers within the workplace. Also known as warning signs, hazard warning signs or danger signs, they help identify risks before accidents occur and play a vital role in workplace safety management.

These signs are widely used in factories, warehouses, construction sites, workshops, schools, hospitals, utilities, commercial premises and public buildings where hazards need to be clearly communicated.

Typical installation locations include machinery areas, electrical rooms, chemical storage facilities, loading bays, construction zones, plant rooms, restricted access areas and workplace entrances.

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

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Subcategories

Hazard Warning Signs
Workplace Warning Signs
Industry Warning Signs
Overhead & Head Clearance Signs
Construction & Site Safety Signs
Roof & Height Safety 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
Danger Loose Rocks Stay Away Sign with falling rocks warning and stay out instruction

Danger Loose Rocks Stay Away Sign

Danger Loose Rocks Stay Away Sign clearly warns of loose or falling rocks and instructs people to keep away from the hazardous area.
• Alerts people to the danger from loose or falling rocks and reinforces the instruction to stay out
• Suitable for quarries, construction sites, cliffs and unstable terrain
• High-contrast symbols and bold text provide strong visibility and clear recognition
• Available in Aluminium Composite (3mm), Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reduce the risk of accidents by clearly identifying areas affected by loose rocks
£12.91
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
Curve Top Danger Men Working Overhead safety warning sign

Curve Top Danger Men Working Overhead Sign

Warn individuals of overhead work activity and falling object hazards with this highly visible danger safety sign.
• Clearly warns of workers operating above
• Suitable for construction sites, maintenance areas, and scaffolding zones
• High-visibility yellow and black design ensures quick recognition
• Available in Aluminium Composite (3mm)
• Helps prevent accidents and promotes safer site awareness
£34.30
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