Warn staff and visitors of restricted areas with this Confined Space Safety sign, designed for access control and hazard awareness. Manufactured in the UK from durable, weather-resistant materials, this sign combines a prohibition message “No Unauthorised Entry” with a mandatory instruction “Keep Locked” for maximum impact. Featuring bold text and ISO 7010 compliant symbols, it helps site managers meet HSE safety requirements and reduce risks in workplaces such as factories, warehouses and construction sites. Ideal for doors, gates and enclosures that must remain secure, this sign promotes clear communication to prevent accidents and unauthorised access to dangerous spaces. Available in rigid plastic, recyclable plastic or aluminium composite, with excellent UV resistance for long-term outdoor or indoor use.