PAT Testing in the UK: 3 Months to 5 Years and How to Set Intervals

UK law does not set a specific PAT testing interval. Dutyholders must maintain electrical equipment in a safe condition under the Electricity at Work Regulations 1989, using HSE and IET suggested initial intervals as starting points, then adjusting through risk assessment based on equipment type, environment and past results.

TL;DR:

• UK law leaves the frequency of PAT testing to risk assessment, with initial recommendations ranging from a few months for high-risk equipment to several years for low-risk items.
• Formal visual inspections and combined testing should be adjusted according to equipment movement, environment, and fault history, rather than following fixed schedules.
• Record keeping must include tester identity, test results, and next inspection date, especially for landlords who have statutory obligations at least every five years.
• Regular user checks and scheduled visual inspections throughout the year are more effective than relying solely on an annual PAT visit to ensure safety.
• Building a well-organized digital record system and setting review triggers helps maintain an effective, risk-based maintenance program over time.

Table of Contents

• What UK law requires and who must act
• Suggested initial testing intervals by equipment and setting
• Building a practical risk-based PAT schedule
• Record keeping and landlord obligations
• Guidance for common UK settings
• Why routine checks matter more than an annual PAT visit
• A practical way to manage recurring checks
• Sources
• FAQ

What UK law requires and who must act

The Electricity at Work Regulations 1989 require that electrical equipment is maintained in a condition that prevents danger. The regulations do not specify how often testing must happen, how it must be recorded, or which method to use. This is the single most misunderstood point in UK PAT testing guidance: there is no legal obligation to test every appliance every year.

Instead, the law places responsibility on dutyholders, meaning employers, landlords and facilities managers, to judge the right level of maintenance for their own equipment and circumstances. A dutyholder running a construction site with power tools faces very different risks from one running a quiet office with laptops and printers, and the law expects the response to reflect that.

Competence matters as much as frequency. User checks, a quick look for damage before use, can be carried out by any member of staff with basic instruction. Formal visual inspections need someone who understands what to look for inside a plug or casing. Combined inspection and testing, the process most people mean when they say “PAT testing”, requires a person with the training and test equipment to interpret the results correctly, whether that is an in-house appointee or a contracted engineer.

In practice, “risk-based” scheduling means:

• Higher-risk equipment (power tools, extension leads, anything moved or handled roughly) gets checked more often.
• Lower-risk equipment (double-insulated, rarely moved, used in a clean office) can go longer between formal tests.
• Every schedule should be reviewed and adjusted as records build up, not set once and left alone.

Suggested initial testing intervals by equipment and setting

The Institution of Engineering and Technology’s 5th edition Code of Practice deliberately removed the old prescriptive frequency table that many businesses had treated as a rulebook. Instead, it pushes dutyholders towards using their own risk assessment and inspection history to set intervals. HSE’s guidance still offers practical starting points that most UK businesses use as a baseline before adjusting.

These figures come from HSE’s guidance on electrically powered equipment, which frames them explicitly as starting points rather than fixed rules.

Reading the table correctly matters more than memorising it. A row is a proposed opening interval for equipment you know little about yet, not a target to hit every year regardless of condition. Combined testing becomes more important, not less, wherever equipment is handled roughly, plugged and unplugged often, or exposed to moisture, dust or impact, which is why construction and hire equipment sit at the frequent end of the table while office kit sits at the relaxed end.

The intervals are only a starting point. Two years of clean formal visual inspections with no faults found is a reasonable basis for stretching an interval; a run of failed tests or damaged casings is a reason to shorten one, regardless of what the table originally suggested. HSE’s own guidance on inspection and maintenance backs this adaptive approach, noting that intervals can lengthen where history shows negligible deterioration or shorten where faults appear.

• Start with the table above for any equipment you have no testing history for.
• Shorten the interval whenever a test finds a fault, a near-miss is reported, or equipment moves to a harsher environment.
• Lengthen the interval only after multiple clean inspection cycles, and document the reasoning.

Building a practical risk-based PAT schedule

Turning “risk-based” from a phrase into a working schedule takes a handful of concrete steps.

1. List every item of electrical equipment by location, noting how it is used and how often it is moved or handled.
2. Assess the environment for each item: is it in a clean office, a workshop, outdoors, or somewhere the public can access it?
3. Check past records for that item or similar equipment, looking for previous faults, near-misses, or a clean run of passes.
4. Assign a starting frequency band using the HSE/IET table as a baseline, then adjust up or down based on the environment and history.
5. Allocate responsibility: who does user checks daily, who performs formal visual inspections, and who carries out combined testing.
6. Set review triggers, such as a failed test, a change of location, or a set number of months, that force a re-look at the interval.
7. Define escalation and remedial timelines: how quickly a failed item must be repaired, removed from service or replaced.
8. Batch combined tests by site or floor where practical, so an external tester or in-house appointee can work through equipment in one visit rather than several.

Pro Tip: Group combined tests around a slower trading period or a planned closure, so testing causes minimal disruption to staff and customers.

The biggest failure point in most businesses is not the testing itself but the review step. A schedule set up once, without a trigger to revisit it, drifts out of date as equipment ages, moves rooms or gets replaced. Building review points into the schedule from the start, rather than relying on someone remembering, is what keeps a risk-based approach defensible over several years rather than just on paper.

Record keeping and landlord obligations

Good records are what turn a sensible testing regime into evidence you can produce on demand, whether that is for an insurer, an inspector or a tenant.

Landlords carry a distinct legal duty separate from general PAT guidance. Under the electrical safety standards regulations for the private and social rented sectors, landlords must have the fixed electrical installation inspected and tested at least every five years, and must retain the resulting report and supply it to tenants or the local authority on request. Landlords who provide appliances as part of a tenancy should also ensure those items are checked, following the same risk-based logic as any other dutyholder.

A useful PAT or EICR record includes:

• The name of the tester or inspecting person and their competence.
• The date of the test and the result (pass, fail, or remedial action needed).
• The item description and its location.
• The next scheduled test date.
• Any remedial work required, and confirmation once it is completed.

Retention matters as much as content. Landlords must be able to produce the current electrical installation report at short notice, and the regulations expect remedial work flagged in a report to be completed within the timescale the report specifies. Businesses without a landlord’s statutory five-year duty still benefit from keeping several years of history, since that history is exactly what supports lengthening or shortening intervals later.

Guidance for common UK settings

Frequency guidance changes shape once you apply it to a specific environment rather than a generic table.

• Offices: lower risk overall, so the emphasis sits on user checks and selective combined testing, often skipped entirely for double-insulated equipment that rarely moves.
• Construction and industrial sites: frequent user checks, often daily, combined with formal visual inspection weekly to monthly and combined testing as often as every three months given the harsher handling and environment.
• Landlords and HMOs: checks at the start of each tenancy, a clear record of appliances supplied, and closer attention to items used by multiple tenants or left in shared spaces.
• Hospitality and retail: shorter inspection intervals for anything the public touches directly, such as kettles in a guest room or equipment behind a bar, since public-use equipment sits towards the more frequent end of HSE’s suggested intervals.

None of these are fixed rules, they are starting points that should shift as your own inspection and test history builds up.

Why routine checks matter more than an annual PAT visit

The habit of booking one annual PAT visit and considering the job done misses the point of a risk-based regime. A single yearly visit catches faults that developed over the previous twelve months, but it does nothing to catch a damaged cable spotted in week two. Consistent user checks and scheduled visual inspections, carried out throughout the year, close that gap far more effectively than an occasional bulk test.

The practical challenge is rarely deciding on an interval, it is keeping the process running without it becoming another piece of paperwork nobody looks at. Centralising records, whoever does the checking, and setting automatic reminders for review dates is what makes review triggers actually happen rather than slipping. There are tools designed to organise recurring checks and keep the resulting evidence in one place, ready for an inspector, insurer or tenant to see.

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A practical way to manage recurring checks

Running a risk-based PAT schedule alongside fire alarm tests, first-aid kit checks and other recurring safety tasks tends to mean juggling several spreadsheets, paper logs and reminder systems at once. Some digital logbook platforms bring scheduling, reminders, record storage and follow-up tracking into a single place, so a failed test or an overdue review does not get lost between systems.

That matters most when a review trigger or a tenant request lands on your desk unexpectedly. Instead of hunting through old paperwork for the last test date or the outstanding remedial action, everything sits against the relevant site and item, ready to show. Businesses managing several sites can keep each one’s schedule and history separate but accessible from the same account.

If you want a straightforward way to keep PAT records, EICR reports and other compliance checks organised and easy to produce on request, see the Site Logbook Annual Plan.

Sources

• PAT - Portable appliance testing FAQs (HSE)
• Gov
• The 5th edition of the IET Code of Practice for In-Service Inspection and Testing of Electrical Equipment (IET)

FAQ

What is the legal requirement for PAT testing in the UK?

There is no specific legal requirement to carry out PAT testing at a set frequency. The Electricity at Work Regulations 1989 require equipment to be maintained safely, leaving dutyholders to decide the right inspection and testing regime through risk assessment.

How often should a PAT test happen?

It depends entirely on the equipment type and environment, so there is no single correct answer. HSE’s suggested initial intervals range from a few months for construction equipment to several years for low-risk office items, adjusted afterwards based on inspection history.

Is there a shortage of PAT testers in the UK?

This is not a topic covered by official HSE or IET guidance, so no reliable national figure exists for tester availability. Businesses typically arrange testing through a qualified electrician or an in-house appointee trained to carry out combined inspection and testing.

Is PAT testing still a legal requirement?

Combined inspection and testing itself is not a standalone legal requirement, but maintaining equipment in a safe condition is, under the Electricity at Work Regulations 1989. For most businesses, a documented risk-based programme that includes user checks, visual inspections and periodic combined testing is how that duty is met in practice.

Written with the help of BabyLoveGrowth