Warning Signs

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 Demolition In Progress warning safety sign with yellow and black hazard symbol

Danger Demolition In Progress Sign

Warn personnel and visitors of active demolition work with this Danger Demolition In Progress Sign.
• Warns that demolition work is currently in progress to help prevent unauthorised access
• Ideal for construction sites, demolition projects, refurbishment works and restricted access areas
• High-visibility yellow and black design ensures clear recognition 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 improve site safety by clearly identifying hazardous demolition zones
£4.07
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
£8.50
Warning To Public Sign

Warning To Public Sign


Warning To Public Sign clearly informs visitors and members of the public that a building site is private property, unauthorised entry is prohibited and parents should warn children of site dangers.
• Warns against unauthorised access, trespassing and playing on building sites.
• Ideal for construction sites, building projects, perimeter fencing, private property and restricted site entrances.
• High-visibility yellow background with bold black lettering provides clear recognition and readability.
• Available in Aluminium Composite (3mm), Aluminium Composite With Fixing Channel (3mm), Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm).
• Helps reinforce site access restrictions, parental awareness and safety precautions around hazardous building areas.
£8.50
Warning Lorries Turning Sign

Warning Lorries Turning Sign

Warning Lorries Turning Sign clearly alerts pedestrians, workers and drivers to turning lorry hazards and encourages caution around areas with heavy vehicle movements.
• Warns individuals of turning lorries and helps reduce the risk of vehicle-related accidents.
• Ideal for construction sites, industrial estates, delivery areas, loading bays and vehicle access routes.
• High-visibility yellow background with bold black lettering and a recognised warning triangle ensures clear recognition.
• Available in Aluminium Composite (3mm), Aluminium Composite With Fixing Channel (3mm), Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm).
• Helps improve pedestrian and driver awareness around turning vehicles and supports safer traffic movement.
£8.50
Danger Asbestos Permit To Work Sign

Danger Asbestos Permit To Work Must Be Obtained Sign

Danger Asbestos Permit To Work Must Be Obtained Sign clearly warns workers, contractors and visitors of asbestos hazards and reinforces the requirement to obtain a permit before carrying out work.
• Warns of asbestos hazards and instructs personnel to obtain a permit to work before undertaking activities in restricted areas.
• Ideal for construction sites, refurbishment projects, asbestos work zones, industrial premises and controlled access areas.
• High-contrast yellow warning and blue mandatory panels with bold lettering provide clear visibility and quick 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 reinforce asbestos safety procedures, permit to work requirements and controlled access to hazardous work areas.
£5.72
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
£44.24
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
£5.72
Danger Asbestos Being Removed No Unauthorised Persons Beyond This Point safety sign with warning and prohibition symbols

Danger Asbestos Being Removed No Persons Sign

Warn staff, contractors and visitors that asbestos removal is in progress and prohibit unauthorised access with this highly visible safety sign.
• Prevents entry into hazardous asbestos removal zones
• Ideal for construction sites, demolition areas and restricted workspaces
• High-visibility yellow, black and red 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 reduce exposure risks and maintain site safety compliance
£5.72
Danger Buried Cables Electrical warning safety sign with electrical hazard symbol

Danger Buried Cables Electrical Sign

Warn workers of buried electrical cable hazards with this Danger Buried Cables Electrical Sign.
• Alerts workers to the presence of underground electrical cables
• Ideal for construction sites, excavation zones and utility areas
• High-contrast yellow and black design ensures clear 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 cable strikes, electrical accidents and excavation damage
£2.26
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
£8.50
Warning Mud On Road Sign

Warning Mud On Road Sign

Warning Mud On Road Sign clearly alerts drivers, workers and visitors to muddy road surfaces and encourages caution around areas where vehicles may encounter mud hazards.
• Warns of mud on the road and helps reduce the risk of skidding, loss of traction and vehicle accidents.
• Ideal for construction sites, farm entrances, site access roads, rural routes and areas with frequent vehicle movements.
• High-visibility yellow background with bold black lettering and a recognised warning triangle provides clear recognition.
• Available in Rigid Plastic (1mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm).
• Helps improve driver awareness and encourages safer vehicle movement around muddy roads and site entrances.
£8.50
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
£2.26