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Guidance

Approved verification: guidance and application form

Weights and Measures Act 1985 and subsequent Deregulation Order 1999 (as amended).

Updates to this page

From:
Office for Product Safety and Standards
Published:
20 March 2014
Last updated:
8 October 2026
Show all updates

  1. Verifier List Updated

  2. List of Approved Verifiers Updated

  3. AV List Updated

  4. Verifier List Updated

  5. Register Updated

  6. Verifier List Updated

  7. List of Verifiers Updated

  8. List of Verifiers Updated

  9. Verifier Register Updated.

  10. Register Updated

  11. Updated Register

  12. List Updated

  13. Register Updated

  14. AV Register Updated

  15. AV Register Updated

  16. AV Register Updated

  17. Register of approved verifiers updated.

  18. Register of approved verifiers updated.

  19. Register of approved verifiers updated.

  20. Email address updated on the application form for approved verifier status.

  21. Register of approved verifiers updated.

  22. Register of approved verifiers updated.

  23. Register of approved verifiers updated.

  24. Register of approved verifiers updated.

  25. Register of approved verifiers updated.

  26. Register of approved verifiers updated.

  27. Register of approved verifiers updated.

  28. Register of approved verifiers updated.

  29. Guidance and register of approved verifiers updated.

  30. Register of approved verifiers updated.

  31. Updated guidance published on becoming an approved verifier.

  32. Register of approved verifiers updated.

  33. Register of approved verifiers updated.

  34. Notification templates for fuel dispenser approved verifiers updated.

  35. Register of approved verifiers updated.

  36. Metrology stickers order form updated.

  37. Application form for approved verifier status revised.

  38. List of approved verifiers updated.

  39. List of identification stamp numbers updated.

  40. Metrology stickers order form added.

  41. List of approved verifiers and identification stamp numbers issued to Local Weights and Measures Authorities updated.

  42. Approved verifier register and master stamp list have been updated. This is a listing of the numbers allocated to local weights and measures authorities and approved verifiers for identification purposes on items of weighing or measuring equipment.

  43. The list of approved verifiers has been updated. This register lists those manufacturers, installers and repairers (M/I/R) who have been granted approved verifier status under the provisions of section 11A of the Weights and Measures Act.

  44. The attachment for the list of approved verifiers has been updated.

  45. Updates to the approved verifier register and approved stamp number list.

  46. Metrology stickers email address has changed.

  47. Approved verifiers register has been updated.

  48. Approved verifiers register updated

  49. Approved verifiers register has been updated.

  50. The approved verifier register has been updated.

  51. Attachment for the the approved verfiers list has been updated.

  52. The approved verifier register attachment has been updated.

  53. First published.

Approved verifiers

Section 11A of the Weights and Measures Act, introduced by the Deregulation (Weights and Measures) Order 1999, enables manufacturers, installers and repairers of weighing and measuring equipment to pass as fit for use for trade or re-qualify certain equipment (as an alternative to your local Weights and Measures Inspector). The Legislative Reform (Verification of Weighing and Measuring Equipment) Order 2008 further amended the Weights and Measures Act 1985 to permit existing approved verifiers to conduct verification after the activity of adjustment.

Manufacturers, installers and repairers of weighing and measuring equipment can apply to the Secretary of State for approval under section 11A of the Act.

The approval system contains a requirement that the approved verifier possesses and operates an acceptable certified quality system. This must fully encompass the requirements of the legislation and the activities to ensure that equipment is correctly verified and necessary consumer protection is maintained.

Once granted approval, the approved verifier is subjected to regular audits, is limited to specific equipment types and can have approval suspended or withdrawn if found to be in breach of their approval conditions.

Download the guidance on becoming an approved verifier (PDF, 321 KB, 13 pages)

Verification stickers correspondence and pricing

Apply to become an approved verifier

Manufacturers, installers and repairers of weighing and measuring equipment seeking an approval to conduct verification (passing as fit for use for trade or re-qualification) need to submit a completed application form for approved verifier status with their supporting documentation.

Download the application form for approved verifier status (ODT, 47.5 KB)

Identify an approved verifier

The Office for Product Safety and Standards (OPSS) maintains an up to date register of all approved verifiers and an up to date list of authorised stamp numbers.

Approved Verifiers Register - October 2026 (PDF, 175 KB, 3 pages)

Authorised stamp numbers

Reporting issues with approved verifiers

Approved verifiers must comply with the conditions of their approvals. Any concerns discovered by inspectors or verifiers of equipment should be notified to OPSS for investigation.

Please supply enough information, including a brief description of the events, the approved verifier concerned, the point in issue and actions taken to date.

Issues should be reported by email: opss.enquiries@businessandtrade.gov.uk

Example notification formats for use by fuel dispenser approved verifiers

These are for download, editing and use by approved verifiers:

Notification template - UK equipment (ODT, 17.5 KB)

Notification template - CE / UKCA / CE UKNI instruments (ODT, 17.4 KB)

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