PAT Testing Frequency Guide for UK Businesses: How Often Should You Test?

There is no single PAT testing interval that suits every workplace. Decide separately when equipment needs user checks, formal visual inspection and electrical testing, taking account of the equipment, its use and the conditions around it.

HSE explains that UK workplace law requires electrical equipment to be maintained to prevent danger; it does not require every appliance to receive an annual PAT test. See the HSE’s explanation of PAT testing requirements.

Start by separating the three types of check

• User checks: simple checks by someone using the equipment, looking for damage or other obvious concerns. Staff need to know what to look for and how to report a fault.
• Formal visual inspection: a more systematic examination by someone competent for that task.
• Combined inspection and electrical testing: inspection supported by the appropriate tests and interpretation of results. This needs suitable equipment and greater knowledge.

These activities do not automatically happen at the same interval. A scheduled electrical test does not replace the checks needed between visits.

Consider each equipment group in its actual setting

• Static office equipment: consider whether leads and plugs are protected, the area is dry and equipment rarely moves. Electrical testing is not always needed for all low-risk equipment; an appropriate inspection regime may be sufficient.
• Cleaning and catering equipment: frequent handling, heat, moisture and damage to cables can justify closer attention than nearby office equipment.
• Guest or public areas: consider who uses the equipment, how it is handled and whether staff can identify damage promptly.
• Construction and workshop tools: movement, dust, weather and rough handling can make more frequent checks necessary. Do not apply an office schedule to site tools.

For suggested starting intervals, use the equipment-specific tables in HSE’s low-risk workplace guidance (INDG236) or Maintaining portable electrical equipment (HSG107). Read the notes and separate inspection from testing; a table is a starting point for assessment, not a universal timetable.

Turn the assessment into a usable maintenance plan

• Identify the equipment or group and its location.
• Note who uses it, how often it moves and the conditions that could cause damage.
• Set the user-check arrangements, formal inspection interval and any electrical-testing interval separately.
• Record who is responsible for arranging the work and acting on faults.
• Review the results and update the plan when the equipment, environment or pattern of use changes.

For example, a monitor that stays on a protected desk and a vacuum cleaner moved between rooms should not be assigned the same schedule merely because they are in the same building.

Use previous results to review the intervals

Repeated damage, failures or changes in use may show that checks need to be more frequent or that the underlying problem needs fixing. A low failure rate can inform a review, but does not by itself prove that extending an interval is appropriate.

Keep the reasoning with your maintenance plan and retain the inspection and test results and records of action taken. A pass label does not make newly damaged equipment safe to use.

What if an insurer, client or site asks for an annual test?

Check the actual policy or contract wording and resolve any uncertainty with the organisation setting the requirement. A contractual condition is different from a blanket legal rule and may affect how you arrange the work.

Need to plan your next visit?

Share your equipment types, working environment and previous results with AiO so the scope of the visit can be discussed. Our preparation checklist helps with access and shutdown planning. For specialist equipment or several sites, ask for a tailored quote.