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
Danger Confined Space No Unauthorised Entry Permit To Work Must Be Obtained safety sign

Danger Confined Space No Unauthorised Entry Permit To Work Must Be Obtained Sign

Warn personnel of confined space hazards and restrict access with this Danger Confined Space No Unauthorised Entry Permit To Work Must Be Obtained Sign.
• Warns of confined space dangers, prohibits unauthorised entry and requires a permit to work before access
• Suitable for industrial sites, construction areas, plant rooms and restricted access zones
• High-contrast warning, prohibition and mandatory symbols provide excellent visibility and quick 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 support safe access procedures and improve compliance with confined space safety requirements
£6.86
Caution Guard Dogs warning sign

Caution Guard Dogs Sign

Warn visitors and intruders of guard dogs on the premises with this Caution Guard Dogs Sign.
• Helps alert people that guard dogs are present on site
• Suitable for gates, fences, entrances, yards, and business premises
• 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)
• Supports improved site security and visitor awareness
£8.50
Caution Trip Hazard safety sign with trip hazard warning symbol

Caution Trip Hazard Sign

Warn people of potential trip hazards and uneven surfaces with this highly visible caution safety sign.
• Highlights trip hazards and uneven surfaces
• Suitable for workplaces, construction sites and public areas
• 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 slips, trips and falls in hazardous environments
£2.71
CCTV In Operation warning sign with CCTV camera symbol for commercial and public premises

CCTV In Operation Sign

Warn visitors and staff that CCTV surveillance is in operation with this highly visible warning sign for commercial and public environments.
• Clearly informs people that CCTV monitoring is in operation
• Ideal for entrances, commercial premises, construction sites and public access areas
• 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 deter unauthorised activity and improve site security awareness
£2.71
Warning Forklift Trucks Operating safety sign for warehouses and industrial workplaces

Forklift Trucks Operating Sign

Warn staff and visitors to active forklift truck movements with this highly visible warning sign for workplaces and industrial environments.
• Warns people about forklift truck activity in the area
• Ideal for warehouses, factories, loading bays, yards and industrial sites
• 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 collision risks and improve pedestrian safety around moving vehicles
£4.88
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
£14.77
Danger Of Death Electrical warning sign with electrical hazard symbol for high-voltage areas

Danger of Death Electrical Sign

Warn staff and visitors of potentially fatal electrical hazards with this highly visible danger sign for high-risk environments.
• Alerts individuals to deadly electrical danger
• Ideal for substations, electrical rooms and high-voltage areas
• 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 serious injury or death by clearly identifying life-threatening electrical hazards
£2.71
Danger Overhead Cables Height Limit electrical warning sign with electrical hazard symbol

Danger Overhead Cables Height Limit Electrical Sign

Warn staff, contractors and visitors of overhead electrical cables and height restrictions with this highly visible danger sign for hazardous environments.
• Alerts people to overhead cable hazards and height restrictions
• Suitable for construction sites, industrial areas and access routes
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reduce the risk of vehicles or equipment striking live overhead cables
£14.77
Danger High Voltage Cables Overhead electrical warning sign with electrical hazard symbol

Danger High Voltage Cables Overhead Electrical Sign

Warn staff, contractors and visitors of dangerous overhead high voltage cables with this highly visible electrical hazard sign.
• Alerts people to the presence of overhead high voltage cables
• Suitable for construction sites, industrial areas and utility 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 cables
£6.86
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, refurbishment projects 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