Guidance

Weights and measures: business guidance

Resources for business.

Resources available to you from the Office for Product Safety and Standards include guidance on weights and measures equipment and packaged goods.

Business advice

Most UK weights and measures legislation is enforced by Local Authority Trading Standards (or the Department for the Economy in Northern Ireland).

For business-specific advice on complying with the regulations, contact your local Trading Standards service.

Local authorities often ask us to clarify technical or enforcement issues that can be significant to businesses, and we publish our responses in bulletins.

Weights and Measures Bulletins

Weights and measures equipment

We publish guidance for manufacturers, importers and distributors on the regulation of weights and measures equipment, which is also relevant to local authority trading standards:

Weights and measures equipment

Measuring Instruments Regulations 2016

Non-automatic Weighing Instruments Regulations 2016

Under the regulations, businesses can verify that the equipment they manufacture, install, adjust or repair is fit for trade in the UK, by marking it with a prescribed stamp. This requires the certification of their quality management systems by a conformity assessment body (CAB) with UKAS accreditation. We publish lists of the numbers allocated to approved verifiers to identify them on equipment they stamp.

Equipment verification: guidance for businesses

Equipment verification: stamp numbers

We also provide specialised conformity assessment services to enable manufacturers to place regulated weighing and measuring instruments on the market.

NMO Technical Services

Packaged goods

We publish guidance for packers and importers on packaged goods:

Packaged goods: weights and measures regulations

Food information to consumers: quantity labelling

Measuring container bottles: register a manufacturer’s mark

Hallmarking

We publish guidance for manufacturers and retailers on the hallmarking of precious metal articles:

Hallmarking (International Convention) (Amendment) Order 2011

Legislative Reform (Hallmarking) Order 2013

Further information on hallmarking is available from the British Hallmarking Council, which we sponsor.

Published 10 April 2014
Last updated 17 April 2019 + show all updates
  1. Page revised to focus on businesses.
  2. Invitation to Local Weights and Measures Authorities for the 2018-19 Market Supervision Project has been included under national metrology projects.
  3. List of authorised stamp numbers for use by LWMA and approved verifiers updated
  4. List of authorised stamp numbers for use by LWMA and approved verifiers has been updated.
  5. Bulk milk measurement project has been completed and the final report published.
  6. Every Local Weights and Measures Authority in the UK is required to report the level of local enforcement work conducted over a 12 month period under section 70 of the Weights and Measures Act 1985. The Section 70 report for 2014 to 2015 been published in this guidance.
  7. The national legal metrology project for 2014 to 2015 covered medical weighing instrument located in doctors’ surgeries, pharmacies and health centres. The final report has now been published.
  8. The weights and measures bulletins and guidance section of this page has been updated to include an attachment that explains the impact of the Measuring Instruments Directive (MID) after 30th October 2016 for National and European certification requirements pre and post 2016. This guidance note is for business and trading standards.
  9. Every Local Weights and Measures Authority (LWMA) in the UK is required to report the level of local enforcement work conducted over a 12 month period under section 70 of the Weights and Measures Act 1985. The updated Section 70 Return form is now available on this guide. All LWMA’s must complete and return their report to NMRO before 30 June 2016.
  10. Invitation to participate in 2015 to 16 national metrology project which will focus on the competency of verifiers (approved verifiers and approved manufacturers) within the fuel dispenser, weighbridge and bulk fuel industries.
  11. The annual report of Weights and Measures activity conducted by Local Authorities as now been published, it is the Section 70 report 2013 to 2014.
  12. National Measurement Office has updated the guide on enforcement of Weights and Measures to include a section titled Market Surveillance. This section covers an invitation for Local Authorities to participate in a national project on Weights and Measures enforcement relating to Non-automatic Weighing Instruments up to 50kg.
  13. First published.