Compliance 5 min read15 March 2026

PAT Testing Certificates and Records: What You Need to Keep and Why

A PAT test is only as good as the records that prove it happened. This guide explains what documentation you should receive, how long to keep it, and why it matters for insurance and legal compliance.

Many businesses complete a PAT test and file away the certificate without giving much thought to what the documentation actually needs to contain, how long it should be retained, or when it might need to be produced. In the event of an electrical incident — a fire, an electric shock, or a claim — the quality and completeness of your PAT testing records may be the most important factor in determining your legal and insurance position. Understanding what good PAT testing documentation looks like is therefore an important part of managing your electrical safety obligations.

What Documentation Should You Receive After a PAT Test?

A professional PAT testing company should provide two main documents: an appliance-level test report and a certificate of testing. The test report should list every appliance tested, identified by description, make and model (if available), a unique ID number or location reference, the test date, the test results (visual inspection pass/fail, insulation resistance value, earth continuity value where applicable), and the overall pass or fail outcome. The certificate of testing summarises the visit — premises name, date, number of appliances tested, number passed, number failed, engineer's name and qualification, and their signature. Both documents should be provided in durable form — ideally digitally as a PDF that can be stored and reproduced easily.

How Long Should PAT Test Records Be Kept?

There is no statutory minimum retention period specified for PAT test records, but the generally accepted practice — recommended by HSE guidance and the IET Code of Practice — is to retain records for the life of the appliance or until the next test, whichever is longer. In practice, most businesses retain PAT test certificates for a minimum of three years, and some retain them indefinitely for high-risk appliances or where the records may have legal significance. For care homes, schools, and other regulated environments, longer retention aligned with the inspection and audit cycle is advisable.

Pass and Fail Stickers: What They Must Show

Every appliance tested should be labelled with a pass or fail sticker immediately after testing. Pass stickers should show the date of testing and the date when the next test is due. Fail stickers should clearly indicate that the appliance must not be used and should show the testing date. The stickers provide visual assurance that equipment has been tested and allow anyone using the appliance to quickly identify its status. While stickers alone are not sufficient documentation — they can be removed or fall off — they are an important supplement to the written records.

When Will You Need to Produce Your PAT Records?

  • HSE inspection following a workplace accident or electrical incident
  • Fire service investigation following a fire at your premises
  • Insurance claim related to an electrical fire or fault
  • CQC inspection for care homes and healthcare providers
  • Ofsted inspection for schools and educational establishments
  • Local authority licensing inspection (HMOs, care homes, entertainment venues)
  • Due diligence during a business sale or lease renewal
  • Legal proceedings following a personal injury claim

Digital Records: The Modern Approach

MES PAT Testing Ltd provides all PAT test documentation digitally — appliance-level reports and certificates are emailed as PDFs immediately after each visit. Digital records are easier to store, harder to lose, and can be reproduced instantly when needed. We also maintain a record of each client's testing history, so if you ever need to reconstruct lost records, we can provide historical certificates and reports from our own files. Annual reminder emails ensure you know when your next test is due, and our online booking system allows you to schedule your next visit with a few clicks.

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