Warehouses, workshops, and industrial units rely on clear safety signage to protect staff, visitors, and contractors. Whether you operate a small storage unit or a busy fulfilment space, the right signs help prevent accidents, guide behaviour, and ensure compliance with UK health and safety regulations. This guide explains the essential warehouse safety signs every small business must display — and where to place them.

1. Why Warehouse Safety Signs Matter

Warehouses contain:

• Moving vehicles

• Heavy loads

• Machinery

• Slips, trips, and fall hazards

• Restricted areas

Clear signage helps:

• Reduce accidents

• Direct staff safely

• Comply with UK regulations

• Protect visitors and contractors

• Improve workflow and organisation

Safety signs are a legal requirement under the Health and Safety (Safety Signs and Signals) Regulations 1996.

2. Mandatory Warehouse Safety Signs

These signs are required wherever hazards exist.

PPE Must Be Worn

Indicates required protective equipment, such as:

• High‑visibility clothing

• Safety boots

• Hard hats

• Eye protection

• Hearing protection

Mandatory signs are blue with white pictograms.

Forklift Operating Area

Warns staff and visitors that forklifts or pallet trucks are in use. Essential for loading bays, aisles, and warehouse floors.

Danger / Caution Signs

Used for:

• Low beams

• Trip hazards

• Heavy loads

• Moving machinery

• Electrical hazards

These signs are yellow with black pictograms.

3. Fire Safety Signs for Warehouses

Warehouses must display:

Fire Exit Signs

• Green and white

• Placed along escape routes

• Above exit doors

• At every change of direction

Fire Extinguisher Signs

Identify the location and type of extinguisher.

Fire Assembly Point Signs

Required for all commercial premises with staff or visitors.

4. Access‑Control Signs

Warehouses often contain restricted or hazardous areas.

Common signs include:

• Authorised Personnel Only

• Restricted Area

• No Entry

• Staff Only

• No Admittance

These help prevent unauthorised access to:

• Plant rooms

• Chemical storage

• Machinery areas

• Electrical cupboards

5. Traffic & Vehicle Movement Signs

If your warehouse has vehicle activity, you may need:

• Pedestrian Walkway

• Forklift Route

• No Vehicles Beyond This Point

• Speed Limit

• Stop / Give Way

These signs help separate people from vehicles — a major cause of warehouse accidents.

6. Recommended Sizes for Warehouse Signs

Internal Signs

• 200 × 150 mm — general safety

• 300 × 200 mm — high‑visibility areas

External & Long‑Distance Signs

• 400 × 300 mm

• 450 × 300 mm

• 600 × 450 mm (large sites)

Larger signs are essential for forklift zones and loading bays.

7. Material Options

Aluminium (Premium)

• Rigid and durable

• Ideal for internal walls and doors

• Professional appearance

ACM (Outdoor Grade)

• Weatherproof

• Perfect for loading bays, yards, and external walls

Self‑Adhesive Vinyl

• Best for internal equipment, doors, and smooth surfaces

• Cost‑effective for bulk use

8. Common Mistakes to Avoid

❌ Using small signs in large spaces

Warehouses need larger, high‑visibility signage.

❌ No forklift warning signs

One of the most common HSE issues.

❌ Using vinyl outdoors

It fades and peels — use aluminium or ACM.

❌ Inconsistent signage

All signs should follow the same colour and style standards.

❌ Signs placed too high or too low

Eye‑level placement is essential.

9. Best Practice Summary

For small warehouses and industrial units:

• Use PPE Required signs at all entrances

• Mark forklift areas clearly

• Display fire exit and assembly point signs

• Use restricted access signs for hazardous zones

• Choose 300 × 200 mm or larger for visibility

• Use ACM outdoors and aluminium indoors

• Keep signage consistent and well‑maintained

Clear warehouse signage protects your team and keeps your business compliant.

This article is part of our Mandatory Workplace Signs series. Read the full pillar guide here: Mandatory Workplace Signs (UK Requirements).