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NRMM Exemption policy

Non Road Mobile Machinery (NRMM) Low Emission Zone Exemption Policy

The Mayor of London is introducing new standards to reduce emissions of pollutants from construction and demolition activity and associated equipment. In August 2014 the Mayor adopted the Control of Dust and Emissions from Construction and Demolition Supplementary Planning Guidance following extensive consultation. The SPG includes the world’s first Non-Road Mobile Machinery Low Emission Zone (NRMM LEZ) combining standards to address both nitrogen oxide (NOx) and particulate matter (PM) emissions.


From 1st September 2015 construction equipment used on the site of any major development within Greater London will be required to meet the EU Stage IIIA as a minimum; and construction equipment used on any site within the Central Activity Zone or Canary Wharf will be required to meet the EU Stage IIIB standard as a minimum. Some exemptions will be provided where pieces of equipment are not available at the emission standard stipulated or in the volumes required to meet demand in a construction environment as dynamic as London’s.


From 22nd May to 3rd July 2015 the Greater London Authority (GLA) consulted on an exemptions policy to the new Non Road Mobile Machinery Low Emission Zone. During the consultation 27 responses were received. The GLA commissioned AMEC to analyse all stakeholder responses received during the consultation period, which is below. Using these responses the GLA has finalised the exemptions policy which is also published below.

Exemptions policy for the NRMM LEZ

NRMM Consultation Responses

The NRMM Exemption Policy Summary of Proposals and Consultation questions document provides further information on how the scheme will be enforced, including a transitional introductory period for the first 6 months, as well as answers to frequently asked questions, such as retrofitting abatement technology.

For further information, please email