Marylebone is one of the most vibrant and diverse areas within London. The neighbourhood is renowned for its history, culture, and its engaged community.

Poor air quality is a major concern for people who visit, live and work in the area.

The Marylebone Low Emission Neighbourhood was established in July 2016, in partnership with The Mayor of London, Westminster City Council and local stakeholders, with the aim of improving air quality throughout the Marylebone area.


Construction has now commenced on our urban realm projects, bringing new pedestrian crossings, green features and increased cycle parking to the area around Marylebone High Street. Visit the Projects page for more information. 

The construction works for the Marylebone High Street (Paddington Street/
Devonshire Street) element begun on 8th July 2019 and are expected to take approximately 16 weeks.

During these works, you may experience some disruption – a full road closure will be in place for southbound traffic between Nottingham Street and Paddington Street. Devonshire Street will be access only during the works. 

If you have any queries about the construction works please email with your question.


The Marylebone Low Emission Neighbourhood was established as a partnership between Westminster City Council and local stakeholders, with support and funding from the Mayor of London, administered by Transport for London.

The LEN steering group is chaired by Cllr Karen Scarborough, Deputy Cabinet Member for Environment, City Management and Communities, and consists of: