PAT Testing Certificates: What to Include and When You Need Them
A PAT testing certificate is a document that records the results of portable appliance testing for a specific set of equipment. If you've hired a PAT tester or been asked to produce one for an auditor, you've probably wondered exactly what it should contain and whether you're legally required to have one.
The short answer: there's no legally mandated certificate format for PAT testing in the UK. But there's a clear industry standard, and getting it wrong — or skipping it entirely — creates problems with insurers, auditors, and anyone else who needs proof your equipment is safe.
What a PAT testing certificate actually is
A PAT testing certificate documents the results of inspection and testing carried out on portable electrical equipment. It typically covers a batch of equipment at a single location — for example, "all portable appliances at 14 High Street, tested on 15 March 2026."
It's different from a PAT register, which is your ongoing record of all appliances and their testing history. The certificate is a snapshot; the register is the full picture. Both matter, but they serve different purposes.
A PAT register (also called a PAT testing record sheet) tracks every appliance over time — test dates, results, trends, next-test dates. It's your working document. See our guide to PAT testing records for what your register should contain.
A PAT testing certificate is typically produced at the end of a testing session to summarise what was tested, what passed, and what failed. It's the document you hand to someone who needs proof — a landlord, insurance company, or health and safety auditor.
Is a PAT testing certificate legally required?
No. There is no UK law or regulation that requires a specific PAT testing certificate.
The Electricity at Work Regulations 1989 require that electrical equipment is maintained to prevent danger, but they don't prescribe the format of the records. The IET Code of Practice (5th Edition) recommends maintaining records of inspection and testing, but doesn't require a certificate per se.
What IS required — practically if not by specific statute — is the ability to produce evidence that your equipment has been tested. For the full legal picture, see our guide to PAT testing law.
A certificate is one common format for that evidence. Others include a well-maintained PAT register, individual appliance test records, or a formal report from a testing contractor. The format matters less than the content — whatever you produce needs to contain the right information.
When you actually need a certificate
In practice, four situations create demand for a PAT testing certificate:
Insurance requirements
Most employers' liability and landlord insurance policies require evidence of electrical equipment maintenance. Some accept a PAT register. Others specifically ask for a certificate or report from a competent tester. Check your policy wording — "evidence of portable appliance testing" might be satisfied by your register, while "PAT testing certificate" implies a specific document.
Landlord obligations
Landlords providing electrical appliances to tenants — especially in HMOs — need to demonstrate those appliances are safe. A PAT testing certificate for each property gives you a dated document to show to local authority inspectors or include with your property compliance pack. This sits alongside the EICR (fixed installations) and gas safety certificate. The same applies to short-term rentals — see our guide to PAT testing for holiday lets.
External audits and inspections
HSE inspections after an incident, health and safety consultants reviewing your compliance, or client audits for contractors working on-site — all of these may ask for a PAT testing certificate as evidence of your maintenance regime.
Contractor handover
If you hire an external PAT testing company, they'll typically provide a certificate as part of the service. This is their deliverable — evidence that the work was done and what the results were.
What to include on a PAT testing certificate
The IET Code of Practice provides guidance on record content. A thorough PAT testing certificate should include:
Header information
- Company/organisation name — who the testing was done for
- Site address — the specific location where testing took place
- Date of testing — when the inspection and testing was carried out
- Certificate/report number — a unique reference for this document
- Tester details — name, company (if external), and qualifications or competence statement
Equipment details (per appliance)
- Appliance ID — the unique asset tag or barcode number
- Description — what the item is (e.g., "Kettle — Kitchen, 2nd Floor")
- Make and model — for identification and recall tracking
- Equipment class — Class I (earthed) or Class II (double insulated)
- Type of inspection — formal visual inspection, combined inspection and test, or both
- Test results — actual measured values:
- Earth continuity (Class I items) — in ohms
- Insulation resistance — in megohms
- Earth leakage / protective conductor current (where applicable) — in milliamps
- Pass/fail outcome — for each appliance
- Notes — damage observed, repairs needed, items removed from service
Summary
- Total appliances tested
- Number passed / number failed
- Failed items — listed with the action taken (repaired, removed from service, labelled as failed)
- Recommended retest date — based on the equipment types and environment
- Next scheduled testing — when the next testing session is planned
Declaration
A statement confirming the inspection and testing was carried out in accordance with the IET Code of Practice for In-Service Inspection and Testing of Electrical Equipment. This isn't a legal requirement, but it establishes the standard the testing was done against — which matters if anyone challenges the methodology.
The difference between a certificate and your register
This confusion trips people up. Here's the distinction:
| Aspect | PAT Register | PAT Certificate |
|---|---|---|
| Scope | All appliances, ongoing | One testing session/batch |
| Updates | Continuously as items are tested, added, or removed | Fixed — records one point in time |
| Audience | Internal use (you, your team) | External use (auditors, insurers, landlords) |
| Format | Spreadsheet, software, or logbook | Formal document (PDF, printed report) |
| Contains | Full history of every appliance | Summary of one testing event |
| Required? | Practically yes (for ongoing compliance) | Situationally (when someone asks for proof) |
You need both. The register is your working tool. The certificate is the evidence you hand over when asked.
Common problems with PAT certificates
Missing test values. A certificate that says "PASS" for every item without recording the actual earth continuity or insulation resistance readings is incomplete. The readings matter because they reveal trends — an appliance consistently passing at declining insulation values is heading toward failure. Record the numbers.
No appliance IDs. "Kettle — Kitchen" isn't a unique identifier when you have three kitchens and six kettles. Every appliance on the certificate should match a physical label on the item. Without this link, the certificate is unverifiable.
Unsigned or unattributed. If nobody's name is on the certificate, it carries no accountability. Include the tester's name, company (if external), and a competence statement. If the tester is an in-house employee, record their training or competence basis.
No failed items listed. A certificate showing 100% pass rate looks good but raises questions. Real testing sessions produce occasional failures — a cracked plug, a failing insulation reading, a damaged cable. If failures aren't recorded, auditors may question whether the testing was thorough.
Outdated information. A PAT certificate from three years ago proves your equipment was safe three years ago. It doesn't prove it's safe today. Certificates should be dated and your testing schedule should ensure regular retesting at intervals appropriate to the equipment and environment.
Creating a PAT testing certificate
If you do your own PAT testing in-house, you can create certificates yourself. There's no requirement to use a professional testing company.
Our free PAT test certificate generator creates a professional certificate from the details you enter — appliance list, test results, tester details, and site information. Fill in the form, preview the result, and print or save as PDF.
For ongoing record-keeping rather than one-off certificates, maintain a proper PAT register alongside any certificates you produce. If you manage enough equipment to outgrow manual certificates, dedicated PAT testing software can generate them automatically from your register — and when you add newly-purchased items, our guide to PAT testing new equipment covers what to record from the start.
What about the labels?
PAT testing labels (the coloured stickers on tested equipment) and certificates are related but separate. The label on the appliance shows at a glance whether it's been tested and when retesting is due. The certificate provides the detailed evidence behind that label.
Both should match — if a label says "Tested 15/03/2026, retest 03/2027," the certificate for that testing session should contain the matching record. For more on labelling, see our guide to PAT testing labels.
Get the certificate right from the start
A well-produced PAT testing certificate saves time every time an auditor, insurer, or local authority asks for evidence. Get the format right once and reuse it.
PATvault generates audit-ready reports from your appliance register data — covering both the ongoing register and point-in-time certificate-style summaries for external use.
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