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No Unauthorised Entry Sign – Durable, ISO-compliant safety sign for UK construction sites. Clearly restricts access to unauthorised personnel.
Professional design, supply, and installation of all types of traffic signs across the UK.
Learn More 🚀The No Unauthorised Entry Sign is a critical safety solution used on construction sites, industrial facilities, and secure zones to control access and prevent trespassing. It uses a bold ISO 9001-compliant red prohibition symbol combined with clear “No unauthorised entry” text to immediately inform and deter unapproved access.
These signs are essential for maintaining site safety and ensuring compliance with UK health and safety regulations. Whether mounted on fences, hoardings, or temporary barriers, they provide a strong visual warning to employees, visitors, sub-contractors, and the public.
Available in a variety of sizes and durable substrates including Corriboard, Foamex, and self-adhesive vinyl, this sign is suitable for temporary or permanent use in high-traffic areas and restricted zones.
This prohibition sign is a standard across construction and infrastructure projects in the UK. Its ISO-style hand symbol and direct wording create a universal and non-negotiable message to halt entry.
The durable build ensures the sign remains legible and effective even when exposed to harsh weather, dust, or handling. It’s designed for mounting on stanchion posts, walls, or site fencing with ease.
✔️ ISO 9001-compliant graphics
✔️ Lightweight, durable substrates for temporary or permanent use
✔️ Fixings and adhesive options available
✔️ Suitable for external site environments
✔️ Bulk order
✔️ Free UK delivery with tiered trade pricing
• Construction and demolition sites
• Restricted building areas
• Utility maintenance zones
• Factory and warehouse entries
• Public footpath closures
• Rail, road and infrastructure projects
• ✅ Clearly restricts unauthorised access
• ✅ ISO 9001 pictogram for compliance
• ✅ Outdoor-ready and weather-resistant
• ✅ Fix to fences, hoarding or stanchion posts
• ✅ Free UK delivery
| Feature | Details |
|---|---|
| Product Name | No Unauthorised Entry Sign |
| Sign Type | Construction Site Prohibition Sign |
| Substrate Options | White 4mm Corriboard, Foamex, Composite, Vinyl Sticker |
| Fixing Options | Self-Adhesive, Drill Holes, Channel Rail |
| Available Sizes (mm) | 400 x 300, 600 x 450, 800 x 600 |
| Compliance | ISO 9001 |
| Section | Link & Description |
|---|---|
| 🛒 Shop All Safety Signs | Browse all UK-compliant safety and warning signs |
| ⚙️ Installation Services | We offer full installation support across the UK |
| 📦 Bulk Orders? | Request bulk discount pricing for councils or large sites |
| 📚 Safety Guidance | HSE Regulations – L64 Guidance on Safety Signs |
Vinyl, Print-direct |
|
| Substrate | Stickers, 1mm PVC Plastic, 2.5mm Composite, 3mm Black Plastic, 3mm Foamex, 4mm White Corriboard, 5mm Foamex |
| Fixing | Channel, Plate Only, Self-Adhesive |
| Size | Width(mm) x Length (mm) | 400×300, 600×450, 800×600 |
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