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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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
£10.81
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
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
£8.10
Warning Pedestrians Crossing safety sign with pedestrian symbol on yellow warning background

Warning Pedestrians Crossing Sign


Clearly warns drivers and personnel of pedestrian crossing activity to improve safety in shared areas.
• Warns of pedestrian crossing hazards and moving foot traffic
• Ideal for construction sites, warehouses, car parks, and roadways
• High-visibility yellow and black design ensures clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps reduce accidents by encouraging awareness around pedestrian routes
£10.20
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
£10.81
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 Scaffolding Incomplete warning safety sign with scaffolding hazard symbol

Danger Scaffolding Incomplete Sign

Warn people of incomplete scaffolding and potential fall hazards with this Danger Scaffolding Incomplete Sign.
• Clearly alerts workers and visitors to unsafe incomplete scaffolding
• Suitable for construction sites, maintenance areas and building works
• High-visibility yellow and black design ensures instant recognition and readability
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps prevent accidents by restricting access to unsafe scaffolding structures
£5.72
Warning Lorries Turning safety sign with yellow warning symbol

Warning Lorries Turning Sign

Warn pedestrians and drivers of turning vehicle hazards with this Warning Lorries Turning Sign.
• Alerts individuals to lorries turning and moving vehicle hazards
• Ideal for construction sites, industrial estates and delivery areas
• High-visibility yellow and black design provides clear recognition from a distance
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl, and Recyclable Correx ® (4mm)
• Helps reduce the risk of collisions between pedestrians and turning vehicles
£10.81
Warning To Public safety sign for private property and construction site entrances

Warning To Public Sign


Warn the public that a site is private property and unauthorised access is prohibited with this highly visible warning sign.
• Prevents unauthorised entry and trespassing
• Ideal for building sites, construction areas and private land
• 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 liability and reinforces site safety rules
£10.81
Danger Overhead Live Wires electrical warning sign with electrical hazard symbol

Danger Overhead Live Wires Electrical Sign

Warn staff, contractors and visitors of hazardous overhead live electrical wires with this highly visible danger safety sign.
• Alerts people to the presence of overhead live electrical hazards
• Suitable for construction sites, industrial areas and outdoor work 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 reduce the risk of accidental contact with live electrical wires
£6.86
Danger Asbestos Keep Out landscape safety sign with warning and mandatory symbols

Danger Asbestos Keep Out Sign - Landscape

Warn individuals to keep out of hazardous asbestos areas with this Danger Asbestos Keep Out Sign - Landscape.
• Clearly instructs people to keep out of asbestos hazard zones
• Ideal for construction sites, demolition areas and restricted workplaces
• Bold colours and recognised safety symbols provide excellent visibility and instant recognition
• Available in Rigid Plastic (1mm) and Rigid Plastic (2mm)
• Helps reduce the risk of exposure to hazardous asbestos fibres and prevents unauthorised access
£2.41
Warning Falling Objects safety warning sign

Warning Falling Objects Sign


Warn individuals of potential overhead falling object hazards with this highly visible warning safety sign.
• Alerts people to falling object dangers from above
• Suitable for construction sites, warehouses, and industrial areas
• High-visibility yellow and black design ensures clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl, and Recyclable Correx ® (4mm)
• Helps maintain workplace safety and hazard awareness
£10.81