Warning Signs

Every workplace has its hazards, whether it’s electrics, vehicles operating, flammable substances, chemicals, construction site risks or simple trips and slips. Having the right warning signs in place helps ensure the protection of your staff and the public, whilst allowing you to comply with health and safety regulations. Warning safety signs are a type of hazard sign and must be installed and maintained where necessary. Ensuring any risks are clearly signposted will reduce the risk of accidents as staff and the public can be made aware of potential threats to their safety. Employers have a legal duty of care to display sufficient warning symbols and minimise the risk of injuries. If you fail to display the appropriate workplace warning signs, you could face legal action. Read more about warning signs & symbols.

Custom Printed Signs and Products
Shop By

96 Items

Set Ascending Direction
View as Grid List
  1. Warning Construction Site Keep Out Sign

    from £4.31 £3.59 was £6.64
  2. Warning Construction Site Keep Out Sign

    Special Price £4.74 £3.95 was £9.54
  3. Warning Fork Lift Trucks Operating Sign

    from £2.40 £2.00
  4. Danger Electricity Warning Sign

    from £2.03 £1.69
  5. Warning Deep Excavations Sign

    from £5.81 £4.84
  6. Danger Of Death Electricity Warning Sign

    from £2.03 £1.69
  7. Warning Contains Asbestos Labels

    from £0.31 £0.26
  8. Warning Men At Work Sign

    from £5.81 £4.84
  9. Warning Men Working Overhead Sign

    from £5.81 £4.84
  10. Warning Beware Of Moving Vehicles Sign

    from £4.27 £3.56
  11. Warning Deep Water Sign

    from £5.81 £4.84
  12. Warning Reduced Headroom Sign

    from £2.03 £1.69
  13. Warning Overhead Crane Sign

    from £4.27 £3.56
  14. Warning Site Entrance Sign

    from £3.67 £3.06
  15. Warning Uneven Ground Sign

    from £7.01 £5.84
  16. Warning Risk Of High Noise Levels Sign

    from £4.27 £3.56
  17. Warning Caustic Sign

    from £2.03 £1.69
  18. Warning Mud On Road Sign

    from £7.86 £6.55
  19. Warning Flammable Liquid Sign

    from £2.03 £1.69
  20. Warning To Public Sign

    from £5.81 £4.84
  21. Warning Harmful Chemicals Sign

    from £2.03 £1.69
  22. Warning Pesticides Sign

    from £2.03 £1.69
  23. Warning Concealed Entrance Sign

    from £5.81 £4.84
  24. Warning Falling Objects Sign

    from £6.97 £5.81
  25. Warning Site Traffic Sign

    from £5.81 £4.84
  26. Warning Hazardous Area Sign

    from £4.27 £3.56
  27. Warning Heavy Plant Crossing Sign

    from £7.01 £5.84
  28. Warning flammable gas sign

    from £2.03 £1.69
  29. Toxic Sign

    from £2.03 £1.69
  30. Corrosive Sign

    from £2.03 £1.69
  31. Warning Corrosive Risk Sign

    from £2.03 £1.69
  32. Warning Electric Fence Safety Sign

    from £2.03 £1.69
  33. Warning Overhead Hazard Sign

    from £2.03 £1.69
  34. Warning Loading In Progress Sign

    from £8.09 £6.74
  35. Warning Chemical Waste Sign

    from £2.03 £1.69
  36. Clinical Waste Sign

    from £1.33 £1.11
  37. Warning Paint Store Sign

    from £2.03 £1.69
  38. Curve Top Warning Mind Your Head Sign

    £33.30 £27.75
  39. Warning Moving Conveyor Sign

    from £7.01 £5.84
  40. Warning Anti-Climb Paint Sign

    from £2.03 £1.69
  41. Warning Laser Beam Sign

    from £2.03 £1.69
  42. Warning Lorries Turning Sign

    from £5.81 £4.84
  43. Warning Fire Risk Sign

    from £2.03 £1.69
  44. Warning Corrosive Sign

    from £2.03 £1.69
  45. Warning Harmful Fumes Sign

    from £2.03 £1.69
  46. Warning Men Working Below Sign

    from £5.81 £4.84
  47. Warning CCTV Monitors This Site Sign

    £5.84 £4.87
  48. Curve Top Warning Falling Objects Sign

    £33.30 £27.75
  49. Curve Top Warning Fragile Roof Sign

    £33.30 £27.75
  50. Warning Raised Manholes Custom Logo Warning Sign

    from £13.00 £10.83
  51. Warning Drain Covers Custom Logo Warning Sign

    from £13.00 £10.83
  52. Warning Loading In Progress Custom Logo Sign

    from £13.00 £10.83
  53. Warning Do Not Reach Sign

    from £7.01 £5.84
  54. Warning Hold The Hand Rail Sign

    from £7.01 £5.84
  55. Photoluminescent Warning Very Hot Water Sign

    from £2.94 £2.45
  56. Warning Toxic Sign

    from £2.03 £1.69
  57. Warning Toxic Sign Glow In Dark

    from £2.94 £2.45
  58. Severe Weather Warning Sign Composite Board

    from £116.05 £96.71
  59. Warning Virus Control Zone Sign

    from £2.11 £1.76
  60. We print your signs

96 Items

Set Ascending Direction
View as Grid List

What are warning signs?

Warning signs are a type of hazard sign and highlight risks that are likely to cause injury or could result in death. Warning signs use a bright yellow triangle with a black border to effectively draw attention. They will also use an exclamation mark, black writing and - sometimes - an accompanying illustration.

It is crucial that appropriate risks are signed by warning safety signs. For example, if your business erects scaffolding, you will need to ensure a Warning Scaffolding Incomplete sign is used during the process. This informs workers that the scaffolding may not be safe to use yet. To learn more, read our guide to the most common types of workplace hazards


Where should warning signs be located?

Warning safety signs should be located in a highly visible location in the area of the risk they refer to. This means warning signs should be free of obstructions (not covered or behind an object that might block people’s view) and as close to eye level as possible (1.5-2m from the ground or floor). Warning symbols should also be installed at the entrance to areas of risks that require personal protective equipment in order to minimise. For example, if there is a specific area of a building site at risk of falling debris, meaning hard-hats must be worn, then appropriate Warning Falling Objects signs and Safety Helmets Must Be Worn signs should be installed before workers reach that area.


Are warning signs required by law?

Yes, warning signs are required by law. They are included in two pieces of UK regulations: the Health and Safety (Safety Signs and Signals) regulations (1996) and the Control of Substances Hazardous to Health regulations (COSHH). The Health and Safety (Safety Signs and Signals) regulations require employers to provide adequate safety signage to highlight risks that cannot be removed through other means. This often means risks that are intrinsic to the operation of the business. In addition, COSHH states that substances that will cause harm and could cause death are marked with COSHH warning signs, signalling the type of hazardous substance and the risks associated with it. In our dedicated guide, you can learn more about the nine COSHH symbols.