Protect sensitive areas and prevent unauthorised access with this Compressor House No Unauthorised Entry sign. Designed for industrial sites, warehouses and engineering facilities, this highly visible prohibition sign helps keep staff and visitors safe around hazardous equipment. Manufactured in the UK from durable, weather‑resistant materials, it is ideal for indoor and outdoor use in harsh environments. Featuring a bold ISO 7010 prohibition symbol and clear text, the sign supports compliance with the Health and Safety at Work Act 1974 and HSE guidance on controlling access to dangerous areas. Available in rigid plastic, recyclable polypropylene or aluminium composite for a long‑lasting, low‑maintenance solution. Install on doors, gates or perimeter fences to reinforce safety standards and restrict entry to authorised personnel only.