Warning Signs

Our comprehensive range of construction warning signs provides clear visual alerts for potential hazards on construction sites, industrial facilities, and work zones. Each sign is manufactured to comply with existing UK safety regulations.

Need help choosing the right construction warning signs for your project?

Our team can provide expert advice on sign selection, placement, and compliance requirements. Contact us on 01902 595050 or email help@rainbowsafety.co.uk

📋 Download our comprehensive Construction Safety Signs Brochure.

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Warning Construction Site Keep Out Sign
-£3.00
Warning Construction Site Keep Out Sign

This Warning Construction Site Keep Out Sign should be used as a warning to potential dangers on site. This essential safety sign is designed to meet UK Safety Regulations and to keep your workplace safe by clearly alerting unauthorised personnel to stay away from construction areas and potential hazards.
Key Features:





Clear warning message - "Bold "Warning Construction Site Keep Out" text with recognizable warning symbol




High-visibility design.Ensuring maximum visibility from a distance






Multiple material options - Available in rigid plastic, 4mm Correx®, aluminium composite and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£5.19
£8.19
Details View details  
Danger Demolition In Progress Sign
Danger Demolition In Progress Sign

Critical warning signage for demolition sites, construction projects, and building renovation work.
This professional Danger Demolition In Progress Sign provides essential safety warning for areas where demolition activities are taking place. Designed to protect workers, contractors, and the public from potential hazards associated with demolition work, this sign ensures compliance with UK safety regulations.
Key Features:





Clear danger warning message - "Danger Demoltion In Progress" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm correx® and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£4.07
Details View details  
Warning Men Working Overhead Sign | Rainbow Safety
Warning Men Working Overhead Sign

Critical safety warning for areas where overhead work activities pose potential hazards to personnel below.
This professional Warning Men Working Overhead Sign provides essential safety communication to alert workers and visitors about overhead hazards in the workplace. Designed to comply with UK safety regulations, this warning sign helps prevent accidents and ensures a safe working environment for all personnel.
Key Features:





Clear danger warning message - "Warning Men Working Overhead" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£6.75
Details View details  
Warning Men Working Below Sign
Warning Men Working Below Sign

Critical safety warning for areas where personnel are working below ground level or in excavated areas.
This professional Warning Men Working Below Sign provides essential safety communication to alert workers and visitors about underground work activities. Designed to comply with UK safety regulations, this warning sign helps prevent accidents and ensures workplace safety for personnel working in excavations, basements, and below-ground areas.
Key Features:





Clear danger warning message - "Danger Heavy Plant Crossing" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£9.01
Details View details  
Warning Men At Work Sign
Warning Men At Work Sign

Critical warning signage for construction sites, industrial facilities, and work areas where personnel are actively working.
This professional Warning Men At Work Sign provides essential safety communication to alert visitors, contractors, and the public about active work areas. Designed to comply with UK safety regulations, this warning sign helps prevent accidents and ensures workplace safety for all personnel in active work zones.
Key Features:





Clear warning message - "Warning Men At Work" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£6.75
Details View details  
Warning Concealed Entrance Sign
Warning Concealed Entrance Sign

Alert visitors and workers to hidden entrance hazards with clear, visible warning signage
This Warning Concealed Entrance Sign is designed to warn everyone about the dangers on construction sites and industrial areas where entrances may not be immediately visible. This essential safety sign meets UK Safety Regulations and helps maintain a safe workplace environment by alerting people to potential risks from concealed or hidden entrances.
Key Features:





Clear warning message - "Warning Concealed Entrance" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£9.01
Details View details  
Danger Drop Below Warning Sign | Rainbow Safety
Danger Drop Below Warning Sign

This Danger Drop Below Warning Sign should be used to inform people that extra care must be taken when walking on the premises. This essential safety signage is designed to meet UK Safety Regulations and helps keep your workplace a safe environment by alerting people to dangerous drops or elevated areas where falls could occur.
Key Features:





Clear danger warning message - "Danger Drop Below" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£2.26
Details View details  
Danger Scaffolding Incomplete Sign
Danger Scaffolding Incomplete Sign

Critical warning signage for construction sites where scaffolding work is in progress or incomplete.
This professional Danger Scaffolding Incomplete Sign provides essential safety warning for areas where scaffolding structures are not yet complete or safe for use. Designed to protect workers, contractors, and visitors from potential hazards associated with incomplete scaffolding, this sign ensures compliance with UK construction safety regulations.
Key Features:





Clear danger warning message - "Danger Scaffolding Incomplete" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£5.72
Details View details  
Warning Deep Water Sign
Warning Deep Water Sign

This Warning Deep Water Sign should be used to warn everyone about the dangers on the site and the risks they can cause. This essential safety sign is designed to meet UK Safety Regulations and to keep your workplace a safe environment by clearly alerting people to deep water hazards that pose serious drowning risks.
Key Features:





Clear warning message - "Warning Deep Water" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£9.01
Details View details  
Warning Falling Objects Sign
Warning Falling Objects Sign

This Warning Falling Objects Sign should be used to inform people of overhead hazards which may occur on the premises. This essential safety sign is designed to meet UK Safety Regulations and to keep your workplace a safe environment by clearly warning of potential falling object dangers that could cause serious injury.
Key Features:





Clear warning message - "Warning Falling Objects" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£9.01
Details View details  
Warning Site Entrance Sign
Warning Site Entrance Sign

This Warning Site Entrance Sign is used as a clear visual warning of potential dangers on site. This essential safety sign is designed to meet UK Safety Regulations and to keep your workplace safe by clearly alerting everyone entering the site to potential hazards and safety requirements.
Key Features:





Clear warning message - "Warning Site Entrance" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£6.75
Details View details  
Warning Site Traffic Sign
Warning Site Traffic Sign

This Warning Site Traffic Sign provides a clear warning of potential dangers on site. This essential safety sign is designed to meet UK Safety Regulations and to keep your workplace safe by clearly alerting drivers and pedestrians to traffic hazards and movement restrictions within work areas.
Key Features:





Clear warning message - "Warning Site Traffic" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, 4mm Correx®, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
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£9.01
Details View details  
Danger Heavy Plant Crossing Sign
Danger Heavy Plant Crossing Sign

This Danger Heavy Plant Crossing Sign provides essential safety signage for construction sites, industrial facilities and any areas where heavy plant machinery is in operation. It provides a clear visual warning to pedestrians and vehicle operators about areas where heavy plant machinery crosses pedestrian routes. Designed to comply with UK safety regulations, this warning sign helps prevent accidents and ensures workplace safety compliance.
Key Features:





Clear danger warning message - "Danger Heavy Plant Crossing" text with hazard symbol




High-visibility design - Bold yellow background with black text for maximum visibility






Multiple material options - Available in rigid plastic, aluminium composite, and self-adhesive vinyl




ISO 7010 compliant design





Price Match | 5-year warranty
£12.31
Details View details  
Warning Construction Activities In Progress Sign
Warning Construction Activities In Progress Sign
Warning Construction Activities In Progress Sign should be used as a warning to potential dangers on site. This essential safety sign is designed to meet UK safety Regulations and to keep your workplace safe. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£9.01
Details View details  
Warning To Public Sign
Warning To Public Sign
Warning To Public Sign Sign should be used as a warning to potential dangers on site. This essential safety sign is designed to meet UK safety Regulations and to keep your workplace safe. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£9.01
Details View details  
Warning Lorries Turning Sign
Warning Lorries Turning Sign
Warning Lorries Turning Sign should be used to warn everyone about the dangers on the site and the risks they can cause. This essential safety sign is designed to meet UK Safety Regulations and to keep your workplace a safe environment. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.

£9.01
Details View details  
Caution Trip Hazard Warning Sign | Rainbow Safety
Caution Trip Hazard Warning Sign
Caution Trip Hazard Warning Sign should be used to inform people that extra care must be taken when walking on the premises. This safety signage is designed to meet the UK Safety Regulations and to keep your workplace a safe environment. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£4.07
Details View details  
Danger Asbestos Sign
Danger Asbestos Sign
Danger Asbestos signs should be used as a warning anywhere that people may be at risk of exposure to asbestos. This will help you to comply with the Control of Asbestos Regulations 2012. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£2.26
Details View details  
Fork Lift Trucks Operating Sign
Fork Lift Trucks Operating Sign
Warning Forklift Operating Sign is designed to warn everyone, whether directly involved or not, about the presence of forklift trucks and the potential hazards they pose.

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£4.07
Details View details  
Danger High Voltage Cables Overhead Electrical Sign - 300mm x 400mm...
Danger High Voltage Cables Overhead Electrical Sign
Danger High Voltage Cables Overhead Electrical Sign is ideal to warn workers and the public from the dangers of electricity. These signs should be in a prominent position as it is crucial to warn everyone, the risk of fatal injuries.

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£5.72
Details View details  
Warning Deep Excavations Sign
Warning Deep Excavations Sign
Warning Deep Excavations Sign should be used as a warning to potential dangers on site. This essential safety sign is designed to meet UK safety Regulations and to keep your workplace safe. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£4.07
Details View details  
Danger High Voltage Cables Underground Electrical Sign | Rainbow Sa...
Danger High Voltage Cables Underground Electrical Sign
Danger High Voltage Cables Underground Electrical Sign is ideal to warn workers and the public from the dangers of electricity. These signs should be in a prominent position as it is crucial to warn everyone, the risk of fatal injuries.

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£2.19
Details View details  
Danger Buried Cables Electrical Sign | Rainbow Safety
Danger Buried Cables Electrical Sign
Danger Buried Cables Electrical Sign is ideal to warn workers and the public from the dangers of electricity. These signs should be in a prominent position as it is crucial to warn everyone, the risk of fatal injuries.

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£2.19
Details View details  
Danger High Voltage Electrical Sign | Rainbow Safety
Danger High Voltage Electrical Sign
Danger High Voltage Electrical sign is ideal to warn workers and the public from the dangers of electricity. These signs should be in a prominent position as it is crucial to warn everyone the risk of fatal injury.

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£2.19
Details View details  
Caution Change In Floor Level Warning Sign
Caution Change In Floor Level Warning Sign
Caution Change In Floor Level Warning Sign should be used to inform people that extra care must be taken when walking on the premises. This safety signage is designed to meet the UK Safety Regulations and to keep your workplace a safe environment. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£2.26
Details View details  
Caution Wet Paint Sign
Caution Wet Paint Sign

Caution Wet Paint Sign should be used as a warning anywhere that that people may be at risk of potential injury. This essential safety sign is designed to meet the UK safety Regulations. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.

£2.26
Details View details  
Danger Keep Out Sign
Danger Keep Out Sign
Danger Keep Out Sign should be used as a warning to potential dangers on site. This essential safety sign is designed to meet UK safety Regulations and to keep your workplace safe. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£9.01
Details View details  
Danger Asbestos Permit To Work Must Be Obtained Sign
Danger Asbestos Permit To Work Must Be Obtained Sign
Danger Asbestos - Permit To Work Must Be Obtained Signs should be used as a warning anywhere that people may be at risk of exposure to asbestos. This will help you to comply with the Control of Asbestos Regulations 2012. 

Conforms to EN ISO 70 10, where applicable.
Signs are available in a range of sizes and materials.
Provides a warning sign to a potential hazard.
£5.72
Details View details