This Door Must Remain Unlocked At All Times Sign
Ensure continuous emergency access with this highly visible This Door Must Remain Unlocked At All Times sign.
• Clearly instructs that the door must remain unlocked at all times
• Ideal for fire exits, emergency routes, public buildings and workplaces
• Bold white text on a blue mandatory symbol ensures excellent visibility
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Supports emergency evacuation procedures and helps maintain safe access at all times
Product Overview
The This Door Must Remain Unlocked At All Times Sign provides a clear mandatory instruction reminding staff, contractors and visitors that designated doors must remain unlocked at all times. Featuring bold white text on a blue circular background, this highly visible sign helps maintain unrestricted emergency access, supports fire safety procedures and promotes compliance throughout commercial, industrial and public buildings.
Where to Use
- Fire exits
- Emergency escape routes
- Public buildings
- Commercial premises
- Workplaces
Key Features
- Displays a clear mandatory safety instruction
- Recognised blue mandatory sign design
- Bold white text for excellent visibility
- Suitable for designated access and emergency doors
- Available in durable material options
Materials & Options
- Rigid Plastic (1mm)
- Rigid Plastic 1mm (Self Adhesive Back)
- Rigid Plastic (2mm)
- Self Adhesive Vinyl
Compliance
This sign supports compliance with UK health and safety regulations, including:
- Health and Safety at Work etc. Act 1974
- Safety Signs and Signals Regulations 1996
Frequently Asked Questions
Where should this sign be installed?
Install it directly on or adjacent to doors that must remain unlocked at all times so the instruction is clearly visible to staff and visitors.
Is this sign suitable for outdoor use?
The rigid plastic and self-adhesive vinyl options are suitable for a variety of indoor applications, with rigid plastic also suitable for many sheltered outdoor locations.
What does this sign indicate?
It provides a mandatory instruction that the designated door must remain unlocked at all times to maintain safe access and support emergency evacuation procedures.
Trade Discounts
Rainbow Safety supplies safety signs to trade professionals across the UK.
Our trade customers include:
- Fire safety service companies
- Fire risk assessors and safety consultants
- Electrical wholesalers
- Facilities management companies
Approved trade customers receive:
- Preferential trade discounts
- Better margins for reselling safety signs
- Marketing support to help you sell more signs
- Access to our full range of safety signs
With the support and marketing tools provided, our sales have grown to over £3,000 per month.
Fire extinguisher servicing margins are not what they used to be, so supplying safety signs has become a valuable additional revenue stream for our business. On one warehouse safety survey alone we £5,100 in a single order.
Previously we were regularly asked to supply safety signs but couldn’t compete with internet prices while maintaining healthy margins. Working with rainbowsafety.co.uk.
Loyalty Rewards
Rainbow Safety rewards regular customers across the UK who order safety signs on an ongoing basis.
- Schools and colleges
- Facilities management companies
- Contractors and maintenance teams
- Offices and commercial premises
- Preferential pricing for regular customers
- Free design service for custom safety signs
- Access to exclusive promotional offers
- Dedicated account manager if required
“Rainbow Safety has become our go-to supplier for safety signs.”
We regularly need safety signs for maintenance work, refurbishments and ongoing compliance updates. Since ordering from Rainbow Safety, the process has been straightforward, reliable and cost-effective.
The loyalty rewards and special offers have helped us save money across repeat orders, while the wide product range means we can usually source everything we need in one place.
Fast ordering, consistent quality and ongoing rewards have made Rainbow Safety a valuable supplier for our business.
Reviews
Very professional looking sign with bright colours and strong construction. It has improved awareness of our building safety procedures considerably.
The sign does exactly what we needed and is easy to read from a distance. Delivery was slightly delayed, but the product quality is decent overall.
Good sturdy sign that feels durable and suitable for long-term workplace use. The lettering is sharp, although more fixing options would have been useful.
Excellent quality sign with very clear wording and a smart professional finish. It stands out well and was easy to install on our access door.




Reliable and well-made sign that arrived securely packaged and simple to mount. It still looks excellent despite constant daily use.