No Entry Signs

No Entry Signs are prohibition signs used to prevent unauthorised access to restricted areas, hazardous locations and private premises. Featuring the universally recognised red prohibition symbol, these signs provide a clear instruction that entry is not permitted beyond a specific point.

Commonly referred to as Do Not Enter Signs, Restricted Access Signs or Authorised Personnel Only Signs, they are widely used in workplaces, warehouses, construction sites, factories, schools, hospitals and public buildings.

Manufactured in the UK, Rainbow Safety's range of no entry signs is available in self-adhesive vinyl, rigid plastic, aluminium and photoluminescent materials. Suitable for both indoor and outdoor use, these signs help improve site security, protect employees and visitors, and support effective access control procedures.

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No Entry To Unauthorised Personnel Sign with red prohibition symbol
No Entry To Unauthorised Personnel Sign
Clearly restricts access to authorised individuals and helps prevent unauthorised personnel from entering designated areas.
• Clearly prevents unauthorised personnel from entering restricted areas
• Suitable for construction sites, warehouses, factories and staff-only zones
• Bold red prohibition symbol and clear text provide 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 improve access control, site security and workplace safety
£5.72
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No Entry Sign with red prohibition symbol
No Entry Sign
Clearly prohibits unauthorised access to restricted or controlled areas with a highly visible No Entry Sign.
• Prevents unauthorised entry into restricted or controlled access areas
• Suitable for workplaces, construction sites, warehouses and staff-only zones
• Bold red and white prohibition symbol provides 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) and Self Adhesive Vinyl
• Helps improve site security, access control and workplace safety
£2.26
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No Entry Without Protective Clothing Sign with red prohibition symbol
No Entry Without Protective Clothing Sign
Clearly informs individuals that protective clothing must be worn before entering designated areas to support PPE compliance and workplace safety.
• Prevents entry without the required protective clothing
• Suitable for factories, warehouses, construction sites and hazardous work areas
• Bold red and white prohibition design provides 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) and Self Adhesive Vinyl
• Helps reinforce PPE requirements and workplace safety procedures
£2.26
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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
£5.72
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No entry traffic sign with red circular symbol and white horizontal bar
No Entry Traffic Sign
Prevent unauthorised vehicle access with this highly visible No Entry Traffic Sign.
• Clearly indicates that vehicle entry is prohibited beyond the designated point
• Ideal for private roads, industrial estates, car parks, and restricted access routes
• Bold red and white design ensures excellent visibility and quick recognition
• Available in Aluminium Composite (3mm) and Aluminium Composite With Fixing Channel (3mm)
• Helps improve traffic control, site safety, and access management
£44.81
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No entry traffic sign with white text on blue background
No Entry Traffic Sign
Clearly restrict vehicle access with this highly visible No Entry Traffic Sign.
• Warns drivers that entry is prohibited beyond the designated point
• Ideal for private roads, car parks, industrial estates, and restricted access routes
• Bold white text on a blue background ensures excellent visibility and quick recognition
• Available in Aluminium Composite (3mm) and Aluminium Composite With Fixing Channel (3mm)
• Helps improve traffic control, site safety, and access management
£35.54
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Danger Asbestos Dust Do Not Enter Sign with warning and prohibition symbols
Danger Asbestos Dust Do Not Enter Sign
Clearly warns of hazardous asbestos dust and prohibits entry to potentially contaminated or restricted areas.
• Warns individuals of asbestos dust hazards and clearly prohibits entry
• Suitable for construction sites, demolition zones, hazardous work areas and refurbishment projects
• High-contrast warning colours and prohibition symbols provide 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 restricted access procedures around asbestos dust hazards
£5.72
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No entry free standing safety sign for restricted access
No Entry Free Standing Sign
No Entry Free Standing Sign designed to clearly prevent unauthorised access and improve pedestrian safety in restricted areas.
• Clearly indicates that entry is prohibited in restricted or hazardous areas
• Ideal for construction sites, warehouses, factories and temporary restricted zones
• Bright high-visibility freestanding design ensures clear recognition and readability
• Manufactured from heavy duty freestanding plastic for durable indoor and outdoor use
• Helps improve site safety, access control and pedestrian management
£12.73
Glow In The Dark No Entry Sign with red prohibition symbol
Glow in the Dark No Entry Sign
Clearly prohibits entry to restricted areas while providing enhanced visibility in low-light conditions.
• Clearly indicates that entry is prohibited in controlled or restricted areas
• Suitable for workplaces, warehouses, factories and emergency access routes
• Glow in the dark design provides clear visibility during low light and power outages
• Available in Extra Glow in the Dark Self Adhesive (Class C) and Extra Glow in the Dark Rigid Plastic (Class C)
• Helps improve access control, emergency preparedness and workplace safety
£5.61
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Glass Safety No Entry Sign with prohibition and raised hand symbol
Glass Safety No Entry Sign
Clearly restricts access to prohibited areas on glazed surfaces, helping reinforce access control and improve workplace safety awareness.
• Clearly indicates that entry is prohibited in restricted or controlled areas
• Suitable for offices, glass doors, reception areas and workplace access points
• Recognisable prohibition symbol provides clear visibility and quick understanding
• Available in Self Adhesive Vinyl
• Helps improve access control, workplace safety and site security
£5.29
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No entry please follow designated route freestanding safety sign
No Entry Please Follow Designated Route Freestanding Sign
No Entry Please Follow Designated Route Freestanding Sign designed to direct pedestrian flow and prevent access to restricted routes.
• Clearly instructs people not to enter and to follow the designated route
• Ideal for warehouses, retail premises, construction sites and public buildings
• Bold high-visibility design ensures clear recognition and easy readability
• Manufactured from heavy duty plastic for durable everyday use
• Helps improve pedestrian safety, traffic flow and site organisation
£11.07
Motorcycle Helmets Must Be Removed Sign with red prohibition symbol
Motor Cycle Helmet Must Be Removed Sign
Clearly instructs motorcycle riders to remove their helmets before entering the premises to support identification and site security.
• Clearly informs riders that motorcycle helmets must be removed before entry
• Suitable for shops, petrol stations, banks, reception areas and secure premises
• Bold prohibition symbol and clear text 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 improve site security and identification procedures at entrances
£2.26
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No Entry Signs Guide

No Entry Signs are prohibition signs designed to prevent people from entering restricted, dangerous or unauthorised areas. They provide a clear visual warning that access is prohibited and help businesses maintain site safety, security and operational control.

These signs are commonly displayed on doors, gates, barriers, corridors, construction sites and restricted work areas where access must be controlled. By clearly identifying prohibited areas, no entry signs help reduce accidents, protect sensitive locations and prevent unauthorised access.

Where Are No Entry Signs Used?

  • Construction sites
  • Factories and manufacturing facilities
  • Warehouses and distribution centres
  • Plant rooms and service areas
  • Schools and educational buildings
  • Hospitals and healthcare facilities
  • Private property and restricted zones
  • Loading bays and vehicle access points

Available Materials

Self-Adhesive Vinyl

Ideal for doors, walls, windows and smooth internal surfaces.

Rigid Plastic

Durable and suitable for general workplace and public building use.

Glow In The Dark

Provides visibility in low-light conditions and during power failures.

Frequently Asked Questions

What does a no entry sign mean?

A no entry sign indicates that access beyond a specific point is prohibited and unauthorised persons should not enter the area.

Where should no entry signs be displayed?

They should be positioned on doors, gates, barriers and access points leading to restricted or hazardous areas.

What colour are no entry signs?

No entry signs use the recognised prohibition sign format featuring a red circle, white background and black text or symbols.

Why are no entry signs important?

They help prevent unauthorised access, improve site safety and reduce the risk of accidents in restricted areas.

Can no entry signs be used outdoors?

Yes. Aluminium and rigid plastic signs are suitable for external locations where weather resistance is required.

What is the difference between a no entry sign and an authorised personnel only sign?

A no entry sign prohibits access entirely, while authorised personnel only signs allow access to designated individuals.

Are no entry signs suitable for construction sites?

Yes. They are widely used to restrict access to hazardous work areas and support site safety procedures.

Can no entry signs be customised?

Yes. Rainbow Safety can manufacture bespoke signs with custom wording, logos and site-specific instructions.

Who uses no entry signs?

They are commonly used by businesses, contractors, schools, healthcare providers, local authorities and facilities managers.

Why Buy From Rainbow Safety?

  • Manufactured in the UK
  • Over 30 years of safety signage expertise
  • Fast dispatch on standard products
  • Trade discounts available
  • Custom signage manufactured to order
  • Extensive range of prohibition and safety signs
  • Trusted by UK businesses, schools and local authorities
  • Expert support from an experienced safety signage team