Warning Signs

Construction Warning Signs alert workers, contractors, visitors and members of the public to potential hazards commonly found on building sites and temporary work areas. Also known as site warning signs, hazard warning signs or construction hazard signs, they play a vital role in reducing risk and improving site safety.

Widely used by contractors, developers, principal contractors, local authorities and facilities managers, these signs help identify dangers such as moving vehicles, excavations, overhead work, hazardous substances and restricted access areas.

Typical installation locations include site entrances, perimeter fencing, hoardings, access routes, excavation zones, loading areas, scaffolding locations and high-risk work areas.

Manufactured in the UK and available in durable materials suitable for indoor and outdoor use, construction warning signs provide clear visual communication to help maintain safe and compliant construction environments.

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Danger deep excavations safety sign with warning symbol

Danger Deep Excavations Sign

Warns of dangerous deep excavation areas to prevent accidents and ensure site safety
• Alerts workers and visitors to serious deep excavation hazards
• Ideal for construction sites, civil engineering works, and excavation zones
• Bold black text on yellow background ensures maximum visibility
• Available in Rigid Plastic (1mm) and Rigid Plastic (2mm)
• Helps reduce risk of falls and supports safer working conditions
£9.83
Danger Demolition In Progress warning safety sign with yellow hazard symbol

Danger Demolition in Progress Sign

Warn people that demolition work is taking place with this Danger Demolition In Progress Sign.
• Alerts workers, visitors and the public to demolition activity
• Suitable for construction sites, demolition zones and restricted work areas
• Bold warning symbol and clear text provide excellent visibility and recognition
• Available in Rigid Plastic (1mm) and Rigid Plastic (2mm)
• Helps reduce risk by clearly identifying hazardous demolition areas
£9.83
Pack of 6 danger keep out warning signs for hazardous restricted areas

Pack of 6 Danger Keep Out Signs

Pack of 6 danger keep out signs designed to warn of hazardous areas and prevent unauthorised access.
• Helps communicate danger warnings and restrict entry to hazardous or restricted areas
• Suitable for construction sites, industrial facilities, warehouses, and restricted zones
• High-contrast colours and bold text ensure excellent visibility and quick recognition
• Manufactured from Rigid Plastic (1mm) for durable long-lasting performance
• Supports improved workplace safety and helps reduce accident and liability risks
£53.09
Pack of 6 Danger People At Work safety signs with yellow warning symbol

Pack of 6 Danger People At Work Signs

Clearly warn workers and visitors that people are working in the area with this Pack of 6 Danger People At Work Signs.
• Warns that people are working in the area
• Ideal for construction sites, maintenance zones, industrial sites and work areas
• High-visibility yellow and black design ensures excellent recognition
• Available in Rigid Plastic (1mm)
• Supplied as a pack of 6 for consistent safety signage across site
£53.09
Danger Asbestos Dust warning safety sign with yellow hazard symbol

Danger Asbestos Dust Sign

Warn workers and visitors of hazardous asbestos dust with this Danger Asbestos Dust Sign.
• Clearly communicates the danger of asbestos dust exposure
• Suitable for construction sites, demolition areas and industrial workplaces
• High-contrast yellow and black design ensures maximum visibility and instant 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 reduce the risk of respiratory harm by alerting workers and visitors to asbestos dust hazards
£2.71
Danger Asbestos Removal warning safety sign with yellow hazard symbol

Danger Asbestos Removal Sign

Warn workers and visitors of hazardous asbestos removal activities with this Danger Asbestos Removal Sign.
• Clearly communicates the presence of asbestos removal hazards
• Suitable for construction sites, demolition areas and industrial workplaces
• High-contrast yellow and black design ensures excellent visibility and readability
• 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 reduce the risk of exposure and improves on-site safety awareness
£2.71
Danger Asbestos Removal landscape safety sign with warning hazard symbol

Danger Asbestos Removal Sign - Landscape

Warn staff, contractors and visitors of hazardous asbestos removal work with this highly visible danger safety sign.
• Clearly alerts people to dangerous asbestos removal activity
• Ideal for construction sites, demolition areas and refurbishment projects
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reduce health risks by improving awareness of asbestos removal operations
£7.36
Danger Asbestos Keep Out safety sign with warning and mandatory symbols

Danger Asbestos Keep Out Sign

Warn staff, contractors and visitors of asbestos hazards and restrict access with this highly visible danger and mandatory safety sign.
• Clearly warns of asbestos hazards and restricted access requirements
• Ideal for construction sites, demolition areas and hazardous zones
• 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), Self Adhesive Vinyl and Recyclable Correx® (4mm)
• Helps prevent exposure to hazardous asbestos fibres and improves site safety compliance
£6.86
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 Asbestos Dust landscape safety sign with warning symbol

Danger Asbestos Dust Sign - Landscape

Warn staff, contractors and visitors of hazardous asbestos dust with this highly visible danger safety sign.
• Clearly alerts people to dangerous airborne asbestos dust
• Ideal for construction sites, demolition areas and industrial workplaces
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps minimise health risks by reinforcing awareness of asbestos dust hazards
£1.82
Danger Asbestos Keep Out safety sign with warning symbol and restricted access message

Pack of 6 Danger Asbestos Keep Out Signs

Warns individuals of asbestos hazards and restricts access to dangerous areas.
• Prevents unauthorised entry where asbestos is present
• Ideal for construction sites, refurbishment areas, and restricted zones
• High-contrast colours and bold symbols ensure clear visibility
• Manufactured using durable Recyclable Correx (4mm)
• Helps maintain safety and controlled access in hazardous environments
£37.02
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