Prohibition signs - Clear signs for restricted areas.
Prohibition signs for no entry, no smoking, restricted access and unsafe actions, designed and installed by SignArtPro for workplaces and commercial sites.
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Prohibition Signs for Workplaces and Restricted Areas
Prohibition signs tell people what is not allowed before they enter the wrong space, take the wrong route or do something unsafe. At SignArtPro, we design, supply and install prohibition signage for offices, warehouses, schools, healthcare sites, construction areas and commercial premises across London and the South East. From no entry signs and no...

Benefits of Prohibition Signs
Prohibition signs help people understand what is not allowed before a problem starts. They are used to stop unsafe actions, control restricted areas and make site rules clear for staff, visitors, contractors and customers. Most prohibition safety signs use the familiar red circle and diagonal line, so the message is easy to recognise at a glance.
Clear Boundaries
No entry signs and no access signs show where people should not go. They work well for plant rooms, staff-only areas, construction zones, loading bays and private parts of a building.
Safer Behaviour
No smoking signs, no mobile phone signs and do not touch notices help stop actions that could create risk. The sign gives the instruction before someone has to be corrected.
Better Site Control
Prohibited signs make workplace rules visible and consistent. This is useful in offices, warehouses, schools, healthcare sites and commercial premises where different people use the same space.
Less Confusion
A clear prohibition sign removes doubt. People know what is not allowed, where the rule applies and when they need to stop before moving further.
Types of Prohibition Signs We Install
Different sites need different prohibition signs. A warehouse may need no pedestrian access signs and no unauthorised access signs, while a school, office or healthcare site may need no smoking signs, staff-only notices or restricted area signs. At SignArtPro, we supply and install prohibition safety signs that are clear, durable and placed where people need to see the rule before crossing the line.

No Entry Signs
No entry signs stop people from walking into areas they should not access. They work well for staff-only zones, plant rooms, private corridors, construction areas and back-of-house spaces.

No Smoking Signs
No smoking signs are used across workplaces, entrances, shared indoor spaces and external smoking control areas. They make the rule clear without staff having to repeat it.

No Unauthorised Access Signs
These prohibited signs help protect restricted rooms, service areas, storage spaces and sensitive parts of a site. They are especially useful where visitors, contractors and staff use the same building.

No Pedestrian Access Signs
No pedestrian access signs are common around vehicle routes, loading bays, warehouse yards and forklift zones. They help keep people away from areas where foot traffic should not pass.

No Parking Signs
No parking signs help keep entrances, delivery bays, fire routes and private spaces clear. For commercial sites, they are often used alongside access control and directional signage.

No Mobile Phone Signs
No mobile phone signs are useful in restricted, sensitive or distraction-risk areas. They are often used in workshops, healthcare spaces, testing areas, production zones and controlled rooms.

No Food or Drink Signs
No food or drink signs are used where hygiene, cleanliness or equipment protection matters. They fit well in clinics, laboratories, production areas, IT rooms and food preparation support spaces.

No Naked Flames Signs
No naked flames signs are used where ignition risk needs to be clearly controlled. They are common near fuel storage, chemical areas, plant rooms and other higher-risk working zones.

No Entry Signs
No entry signs stop people from walking into areas they should not access. They work well for staff-only zones, plant rooms, private corridors, construction areas and back-of-house spaces.

No Smoking Signs
No smoking signs are used across workplaces, entrances, shared indoor spaces and external smoking control areas. They make the rule clear without staff having to repeat it.

No Unauthorised Access Signs
These prohibited signs help protect restricted rooms, service areas, storage spaces and sensitive parts of a site. They are especially useful where visitors, contractors and staff use the same building.

No Pedestrian Access Signs
No pedestrian access signs are common around vehicle routes, loading bays, warehouse yards and forklift zones. They help keep people away from areas where foot traffic should not pass.

No Parking Signs
No parking signs help keep entrances, delivery bays, fire routes and private spaces clear. For commercial sites, they are often used alongside access control and directional signage.

No Mobile Phone Signs
No mobile phone signs are useful in restricted, sensitive or distraction-risk areas. They are often used in workshops, healthcare spaces, testing areas, production zones and controlled rooms.

No Food or Drink Signs
No food or drink signs are used where hygiene, cleanliness or equipment protection matters. They fit well in clinics, laboratories, production areas, IT rooms and food preparation support spaces.

No Naked Flames Signs
No naked flames signs are used where ignition risk needs to be clearly controlled. They are common near fuel storage, chemical areas, plant rooms and other higher-risk working zones.

No Entry Signs
No entry signs stop people from walking into areas they should not access. They work well for staff-only zones, plant rooms, private corridors, construction areas and back-of-house spaces.

No Smoking Signs
No smoking signs are used across workplaces, entrances, shared indoor spaces and external smoking control areas. They make the rule clear without staff having to repeat it.

No Unauthorised Access Signs
These prohibited signs help protect restricted rooms, service areas, storage spaces and sensitive parts of a site. They are especially useful where visitors, contractors and staff use the same building.

No Pedestrian Access Signs
No pedestrian access signs are common around vehicle routes, loading bays, warehouse yards and forklift zones. They help keep people away from areas where foot traffic should not pass.

No Parking Signs
No parking signs help keep entrances, delivery bays, fire routes and private spaces clear. For commercial sites, they are often used alongside access control and directional signage.

No Mobile Phone Signs
No mobile phone signs are useful in restricted, sensitive or distraction-risk areas. They are often used in workshops, healthcare spaces, testing areas, production zones and controlled rooms.

No Food or Drink Signs
No food or drink signs are used where hygiene, cleanliness or equipment protection matters. They fit well in clinics, laboratories, production areas, IT rooms and food preparation support spaces.

No Naked Flames Signs
No naked flames signs are used where ignition risk needs to be clearly controlled. They are common near fuel storage, chemical areas, plant rooms and other higher-risk working zones.
How We Plan and Install Prohibition Signs
Prohibition signage works best when the sign appears before the wrong action happens. We check the area first, confirm what needs to be stopped, then place each prohibition sign where people can see it before entering, parking, smoking, using equipment or crossing into a restricted space.

SITE SURVEY
We look at entrances, corridors, loading bays, staff-only areas, plant rooms, parking spaces, smoking control areas and restricted zones. This helps us choose the right prohibition signs for the way people actually move around the site.

DESIGN AND APPROVAL
We confirm the symbol, wording, size and position before production. Whether you need no entry signs, no smoking signs or no unauthorised access signs, the message should be clear at first glance.

PRODUCTION
Your prohibition safety signs are made for the location. Indoor signs, outdoor signs, car park signs and construction site signs all need the right material and finish to stay readable.

INSTALLATION
We fit each sign at the point where the rule needs to be seen. A no access sign works best before the doorway, not after someone has already walked through it.
What Poor Prohibition Signs Cost
Poor prohibition signs make restricted areas harder to control. If no entry signs, no smoking signs or no unauthorised access signs are missing, faded or placed too late, people may only realise the rule after they have already crossed the line.
Wrong Access
People can walk into staff-only rooms, plant areas, loading bays or private spaces when no access signs are unclear or hidden.
Ignored Rules
Weak prohibition safety signs make rules easier to miss. This is common with smoking control, mobile phone restrictions and “do not touch” areas.
Blocked Spaces
Poor no parking signs can leave entrances, delivery bays, fire routes and private spaces blocked when they need to stay clear.
More Reminders
When prohibited signs are not obvious, staff have to keep explaining the same rules. Clear signs reduce that back-and-forth.
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“ SignArt Pro sorted our shop front from start to finish. The team visited the site, came back with a clear design, and fitted everything cleanly on the day. Couldn't have asked for more. — Retail Shop Owner, London ”
James Whitfield
Prohibition Signs for Different Sites
Every site has areas where people need a clear “do not” message. Prohibition signs help control access, smoking, parking, pedestrian movement and restricted spaces across workplaces, public buildings and commercial premises.
Offices
Offices often need no entry signs, staff-only signs and no unauthorised access signs for plant rooms, service corridors, storage areas and private floors.
Warehouses
Warehouses need prohibition safety signs around loading bays, forklift routes, pedestrian-free zones, yard entrances and restricted equipment areas.
Construction Sites
Construction areas often use no entry signs, no smoking signs, no pedestrian access signs and restricted zone notices to keep visitors and workers away from
Healthcare Sites
Clinics, pharmacies and care settings may need no smoking signs, no mobile phone signs, restricted access signs and hygiene-related prohibited signs.
Schools
Schools use prohibition signage for staff-only rooms, plant areas, car parks, kitchen zones, sports facilities and restricted maintenance spaces.
Retail and Hospitality
Shops, cafés, restaurants and hotels often need no smoking signs, no access signs, staff-only notices and no parking signs around back-of-house areas, delivery points and
Frequently Asked Questions About Prohibition Signs
Quick answers about prohibition signs, including colour, meaning, examples, placement and how SignArtPro can help with custom prohibition signage.
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