Weights and measures regulation

Weights and measures and hallmarking regulation guidance.

This collection brings together the work of the National Measurement and Regulation Office (NMRO) with guides on how NMRO support manufacturers and local authorities working in legal metrology and hallmarking.

Weights and measures equipment regulation guidance

  1. Weights and measures equipment legislation and guidance

    • Detailed guide

Weights and measures enforcement

Weights and measures legislation is enforced by local weights and measures authorities (LWMA). Access Section 70 report and bulletins.

  1. Enforcement of the Weights and Measures Act 1985

    • Detailed guide

Approved manufacturers

Approved manufacturers under Measuring Instruments Directives (MID) permit manufacturers to place equipment on to the European market under the control of an approved quality system. Approved manufacturers under Non-Automatic Weighing Instruments (NAWI) permit manufacturers to seek approval to allow them to undertake self-verification of their EC type approved instruments.

  1. Approved manufacturers: conformity assessment

    • Detailed guide

Approved verification

Approved verifiers in possession of an approval issued by the secretary of state, may conduct their own testing, passing and stamping (verification) of weighing and measuring equipment which they manufacture, install, adjust or repair, as the case may be, as fit for use for trade.

  1. Approved verification: guidance, application form and stickers

    • Detailed guide

Notified bodies

A notified body provides services for conformity assessment on the conditions set out in the new approach directives in support of Conformity European (CE).

  1. Notified bodies: appointment and co-ordination

    • Detailed guide


Hallmarking policy for manufactures and retailers of precious metal articles.

  1. Hallmarking policy

    • Detailed guide
  2. Hallmarking (International Convention) (Amendment) Order 2011

    • Guidance
  3. Hallmarking Legislative Reform Order 2012

    • Guidance

The National Measurement Office (NMO) co-ordinates input into international forums including the International Organization of Legal Metrology (OIML) and the European Cooperation in Legal Metrology (WELMEC). NMO aims to positively influence European Union (EU) and international legal metrology forums in order to benefit the UK businesses, their customers and consumers.

  1. International legal metrology

    • Detailed guide

Packaged goods and food information

Guidance on quantity control of packaged goods for manufacturers.

  1. Packaged goods: weights and measures regulations

    • Detailed guide
  2. Packaged Goods Regulations 2006

    • Guidance
  3. Food information to consumers: quantity labelling

    • Detailed guide

Measuring Container Bottles

How to register a measuring container bottle manufacturers mark

  1. Measuring container bottles: register a manufacturer's mark

    • Detailed guide

Better regulation

  1. Regulators' Code and the National Measurement and Regulation Office

    • Detailed guide