Ensure restricted areas remain secure with this highly visible No Unauthorised Entry sign, designed for workplaces, construction sites, and private property. Manufactured in the UK from durable, weather-resistant materials, it features clear text and an ISO 7010‑compliant prohibition symbol to communicate access restrictions effectively. This sign helps site managers and landowners meet Health and Safety Executive (HSE) requirements for controlling site access and supports compliance with the Management of Health and Safety at Work Regulations 1999. Available in a range of sizes and materials including rigid plastic and aluminium composite, this access control sign is ideal for fences, gates, and doorways. Easy to install and maintenance-free, it’s perfect for enhancing safety and preventing unauthorised access in sensitive or hazardous areas.