Warning Signs

Hazard Safety Signs warn employees, visitors and contractors about potential dangers within the workplace. Also known as warning signs, hazard warning signs or danger signs, they help identify risks before accidents occur and play a vital role in workplace safety management.

These signs are widely used in factories, warehouses, construction sites, workshops, schools, hospitals, utilities, commercial premises and public buildings where hazards need to be clearly communicated.

Typical installation locations include machinery areas, electrical rooms, chemical storage facilities, loading bays, construction zones, plant rooms, restricted access areas and workplace entrances.

Available in self-adhesive vinyl, rigid plastic, aluminium and selected photoluminescent materials, many of our hazard safety signs are manufactured in the UK for excellent visibility, durability and long-term performance.

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Subcategories

Hazard Warning Signs
Workplace Warning Signs
Industry Warning Signs
Overhead & Head Clearance Signs
Construction & Site Safety Signs
Roof & Height Safety Signs
Danger Asbestos warning safety sign with yellow hazard symbol

Danger Asbestos Sign

Warn workers and visitors of hazardous asbestos materials with this Danger Asbestos Sign.
• Highlights the presence of dangerous asbestos materials
• Ideal for construction sites, demolition areas and older buildings
• Bold black text on a high-visibility yellow background ensures 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 health risks by clearly communicating asbestos hazards
£2.71
Warning Flammable Gas Hazard Sign

Warning Flammable Gas Sign

Clearly warns people of flammable gas hazards to help reduce the risk of fire, ignition and explosion.
• Alerts people to the presence of flammable gas and associated hazards
• Suitable for industrial sites, storage areas and gas handling locations
• High-visibility yellow and black design provides clear and immediate 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 reinforce flammable gas awareness and encourage appropriate caution in hazardous areas
£2.71
Wear Hard Hats mandatory safety sign with white helmet symbol on blue background

Wear Hard Hats Sign

Clearly instruct individuals to wear hard hats in designated hazardous areas to reinforce mandatory head protection requirements.
• Instructs workers and visitors to wear hard hats where required
• Suitable for construction sites, factories and hazardous work zones
• Clear symbol and bold blue and white design provide high 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 reinforce head protection requirements and reduce the risk of head injury
£2.71
Danger 415 Volts Electrical Warning Sign

Danger 415 Volts Electrical Sign

Clearly warns people of a 415 volt electrical hazard to help reduce the risk of serious electric shock or injury.
• Warns people of dangerous 415 volt electrical equipment or areas
• Suitable for industrial sites, plant rooms and electrical panels
• High-contrast yellow and black design provides strong 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 reinforce electrical hazard awareness and promote safer working around high-voltage equipment
£2.71
Danger Asbestos Warning safety sign with yellow hazard symbol

Danger Asbestos Warning Sign

Warn individuals of hazardous asbestos materials with this Danger Asbestos Warning Sign.
• Clearly alerts people to the presence of dangerous asbestos hazards
• Ideal for construction sites, demolition areas and industrial premises
• High-contrast yellow and black design provides excellent visibility and instant recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reduce the risk of accidental asbestos exposure and supports workplace safety
£1.82
Do not climb on timber stacks prohibition safety sign

Do Not Climb On Timber Stacks Sign

A clear prohibition sign warning individuals not to climb on timber stacks to prevent accidents and injuries.

Prevents climbing on timber stacks in hazardous areas
Ideal for forestry sites, timber yards, and construction zones
Bold red prohibition symbol ensures high visibility and quick recognition
Manufactured from durable 4mm Recyclable Correx ® material
Helps reduce risk of falls and maintain workplace safety compliance
£10.81
Danger Blue Green Algae Present In Water Do Not Swim Sign with toxicity and prohibition symbols

Danger Blue Green Algae Present In Water Sign - Do Not Swim

Danger Blue Green Algae Present In Water Do Not Swim Sign warns of toxic blue green algae and clearly instructs people not to swim.
• Warns people of toxic blue green algae in water and prohibits swimming
• Suitable for lakes, ponds, reservoirs and public water access areas
• High-contrast colours and clear hazard symbols provide strong visibility
• Available in Aluminium Composite (3mm), Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps discourage water contact where harmful blue green algae is present
£12.91
Corrosive Label Sign with corrosive chemical hazard pictogram

Corrosive Label Sticker

Corrosive Label Sign clearly identifies hazardous corrosive substances and warns people of the potential risk of injury or material damage.
• Alerts people to the presence of hazardous corrosive substances
• Suitable for laboratories, industrial sites and chemical storage areas
• Clear red, black and white pictogram provides immediate hazard recognition
• Available in Self Adhesive Vinyl for clear hazard labelling
• Helps raise awareness of corrosive hazards and reduce the risk of injury or material damage
£2.04
Glow In The Dark Caution Hot Surface safety sign

Glow in the Dark Hot Surface Sign

Clearly warns individuals of hot surface hazards using a glow in the dark design to help prevent burns and contact injuries.
• Warns individuals of the presence of hot surfaces
• Suitable for kitchens, boiler rooms, plant areas and industrial environments
• Photoluminescent design with a bold warning symbol provides clear visibility in low-light conditions
• Available in Extra Glow in the Dark Self Adhesive (Class C) and Extra Glow in the Dark Rigid Plastic (Class C)
• Helps increase hazard awareness and reduce the risk of accidental burns
£4.73
Danger Flammable Liquid No Smoking No Naked Lights Sign with warning and prohibition symbols

Danger Flammable Liquid Multi Purpose Sign

Clearly warns people of flammable liquid hazards while prohibiting smoking and naked lights to help reduce fire and ignition risks.
• Warns of flammable liquid hazards and prohibits smoking and naked lights
• Suitable for chemical storage areas, workshops, industrial sites and hazardous workplaces
• High-visibility warning colours and clear prohibition symbols provide quick recognition
• Available in Aluminium Composite (3mm), Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps improve fire safety awareness and reduce the risk of fire and explosion incidents
£6.86
Warning Flammable Liquid Hazard Sign

Warning Flammable Liquid Sign

Clearly warns people of flammable liquid hazards to help reduce the risk of fire, ignition and explosion.
• Alerts people to the presence of flammable liquids and associated hazards
• Suitable for workplaces, storage areas and industrial environments
• High-visibility yellow and black design provides clear and immediate 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 reinforce flammable liquid awareness and encourage appropriate caution in hazardous areas
£2.71
Safety Helmets And High Visibility Clothing Must Be Worn In This Area Sign

Safety Helmets And High Visibility Clothing Must Be Worn In This Area Sign

Clearly instruct workers and visitors that safety helmets and high visibility clothing must be worn in designated areas.
• Enforces mandatory use of safety helmets and high visibility clothing
• Suitable for construction sites, industrial areas and roadside works
• Clear bold text and recognised symbols provide high visibility and understanding
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reinforce PPE requirements and support a safer working environment
£14.77