Mandatory Signs

Our range of mandatory construction signs are ideal for construction sites, industrial areas and work zones. They have been designed to help keep the construction site safe by clearly showing actions which need to be taken whilst on the site. All of our construction signs are manufactured in accordance with current UK legislation.

📋 View our digital construction brochure showing our most popular construction signs.

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Get The Thumbs Up Construction Safety Sign
Get The Thumbs Up Construction Safety Sign
Improve construction site safety with the "Thumbs Up, Don't Get Knocked Down" safety sign. This essential construction safety sign promotes clear communication between workers and plant operators, helping prevent accidents and ensuring effective on-site safety protocols.
This mandatory construction sign is essential for sites with heavy machinery and plant equipment. It helps establish clear communication protocols between ground workers and plant operators, reducing the risk of accidents and improving overall site safety management.
£5.63
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This Area Must Be Kept Clear At all Times Sign
This Area Must Be Kept Clear At all Times Sign
Essential mandatory construction sign designed to remind staff, visitors, and the general public that specific areas must be kept clear at all times. This professional safety sign helps maintain clear access routes, emergency exits, and operational areas in compliance with workplace safety regulations.
£2.26
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Keep Out Sign
Keep Out Sign

Ensure clear site access control with this professional "Keep Out" mandatory sign. This construction sign reminds staff, visitors, and the general public to keep out of restricted areas, helping maintain workplace safety and site security.
Key Features:





Clear mandatory message - "Keep Out" with professional blue circular design




Meets UK safety signage standards






Professional site control - Instantly recognisable mandatory symbol




High visibility design - Bold blue circular symbol for instant recognition





Price Match | 5-year warranty
£2.26
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Keep Clear Sign
Keep Clear Sign
Essential mandatory construction sign designed to remind staff, visitors, and the general public to keep clear. This professional safety sign ensures compliance with workplace safety regulations and helps maintain clear access routes and operational areas.
£2.26
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Close It Lock It Sign
Close It Lock It Sign
Ensure site security and compliance with this Close It Lock It mandatory sign—an essential addition to any construction site. It is ideal for gates, doors and access points which need to remain closed and locked.
£5.72
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Hoist Gates Must Be Kept Closed Sign
Hoist Gates Must Be Kept Closed Sign
This essential mandatory construction sign serves as a critical safety reminder for staff, visitors, and the general public that hoist gates must be kept closed at all times. Perfect for construction sites, industrial facilities, and any workplace where hoist operations are present.
£5.72
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Keep Site Entrance Clear Sign
Keep Site Entrance Clear Sign

Maintain clear site access and prevent blockages with this professional "Keep Site Entrance Clear" mandatory sign. This sign ensures unobstructed access for emergency vehicles, deliveries, and site operations while maintaining professional site management standards.

Key Features:





Clear mandatory message - "Keep Site Entrance Clear" with professional blue circular design




Professional site management - Ensures unobstructed access for vehicles and personnel






Meets UK safety signage standards




High visibility design - Bold blue circular symbol for instant recognition





Price Match | 5-year warranty

£5.72
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Close These Gates At Night Sign
Close These Gates At Night Sign
This essential mandatory construction sign provides a clear reminder to staff, visitors, and the general public to close gates at night for security and safety purposes. An important safety measure for construction sites, industrial facilities, and any premises with gated access.
£5.72
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Keep To Access Routes Sign
Keep To Access Routes Sign
This essential mandatory construction sign provides a clear reminder to staff, visitors, and the general public to keep to designated access routes for safety and operational efficiency. An important safety measure for construction sites, industrial facilities, and any workplace with designated pedestrian pathways.
£5.72
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Wheel Wash Area Sign
Wheel Wash Area Sign
This essential information construction sign clearly identifies designated wheel wash areas on construction sites and industrial facilities. A critical component for maintaining site cleanliness, preventing mud tracking, and ensuring compliance with environmental and highway regulations.
£5.72
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Sign In Here Sign
Sign In Here Sign
This essential information sign clearly directs visitors and staff to designated sign-in areas for proper site registration and safety compliance. A critical component for maintaining visitor control, security protocols, and health & safety requirements at construction sites, offices, and industrial facilities.
£6.13
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CSCS Cards Required To Work On This Site Sign
CSCS Cards Required To Work On This Site Sign
This essential mandatory construction sign clearly states that all workers must possess valid CSCS (Construction Skills Certification Scheme) cards to work on site. A critical compliance tool for construction sites ensuring skilled, qualified workers and meeting industry safety standards and legal requirements.
£6.13
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Wear Face Mask Sign
Wear Face Mask Sign
This essential mandatory safety sign clearly instructs all personnel and visitors to wear face masks in designated areas. A critical health and safety tool for maintaining hygiene standards, infection control, and compliance with health regulations in various workplace environments.
£4.38
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Please Wear A Face Covering Sign
Please Wear A Face Covering Sign
This polite yet clear health and safety sign courteously requests all personnel and visitors to wear face coverings in designated areas. A professional approach to maintaining hygiene standards, infection control, and health compliance while maintaining a welcoming, respectful tone for customers and staff.
£4.38
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No Hard Hat No Job Sign
No Hard Hat No Job Sign
This essential mandatory construction sign delivers a clear, uncompromising message that head protection is absolutely required for employment on site. A critical safety enforcement tool that emphasizes the non-negotiable nature of hard hat requirements and demonstrates serious commitment to worker safety standards.
£4.38
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Protective Footwear Must Be Worn In This Area Sign
Protective Footwear Must Be Worn In This Area Sign
This essential mandatory safety sign clearly instructs all personnel that protective footwear must be worn in designated areas. A critical safety requirement for workplaces with foot injury hazards, ensuring compliance with health and safety regulations and protecting workers from potential foot and toe injuries.
£4.38
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Protective Clothing Must Be Worn In This Area Sign
Protective Clothing Must Be Worn In This Area Sign
This essential mandatory safety sign clearly instructs all personnel that protective clothing must be worn in designated areas. A critical safety requirement for workplaces with hazardous environments, ensuring compliance with health and safety regulations and protecting workers from chemical, biological, or physical hazards.
£4.38
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Hi-Visibility Jackets Must Be Worn In This Area Sign
Hi-Visibility Jackets Must Be Worn In This Area Sign
This essential mandatory safety sign clearly instructs all personnel that hi-visibility jackets must be worn in designated areas. A critical safety requirement for workplaces with vehicle traffic, machinery operations, or low-light conditions, ensuring maximum visibility and compliance with health and safety regulations.
£6.13
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Eye Protection Must Be Worn In This Area Sign
Eye Protection Must Be Worn In This Area Sign
This essential mandatory safety sign clearly instructs all personnel that eye protection must be worn in designated areas. A critical safety requirement for workplaces with eye injury hazards, ensuring compliance with health and safety regulations and protecting workers from chemical splashes, flying debris, and harmful radiation.
£6.13
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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
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Danger Keep Out Sign
Danger Keep Out Sign
Prevent unauthorised access to dangerous areas with this professional "Danger Keep Out" multi purpose safety sign. This warning sign provides critical hazard communication for construction sites, industrial facilities, and any workplace where restricted access is essential for safety and security.
£9.01
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Keep Locked Sign
Keep Locked Sign
This keep locked sign provides clear mandatory instructions to keep doors, gates, or access points securely locked. Essential for maintaining access control, security protocols, and safety compliance in commercial, industrial, and residential properties across the UK.
£2.26
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Permit To Work Must Be Obtained Sign
Permit To Work Must Be Obtained Sign
This permit to work must be obtained sign is designed to meet UK safety regulations and ensures proper work authorisation procedures are followed. Essential for industrial facilities, construction sites, and hazardous work environments where permit-to-work systems are mandatory for safety compliance.
£4.07
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Sound Horn Drive Slowly Sign
Sound Horn Drive Slowly Sign
This sound horn drive slowly sign instructs drivers to sound their horn and drive slowly, ensuring caution and safety in the area. Essential for industrial or construction sites and areas with limited visibility where vehicle and pedestrian safety is paramount.
£2.26
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Sound Horn Sign
Sound Horn Sign
The Sound Horn Sign from is designed to meet UK Safety regulations. It is available in a choice of sizes and materials, including strong 1mm Rigid Plastic, 1mm Rigid Plastic with a Self-Adhesive backing, and a Self-Adhesive Vinyl Sign.
£12.31
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Safety Starts Here Sign
Safety Starts Here Sign
The Safety Starts Here Sign from is designed to meet UK Safety regulations. It is available in a choice of sizes and materials, including strong 1mm Rigid Plastic, 1mm Rigid Plastic with a Self-Adhesive backing, and a Self-Adhesive Vinyl Sign.
£4.07
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