Planning Policy

The West London Alliance has an ambitious programme to use the planning system to support West London's sustainable growth as a place to live, work, visit and do business as set out in the West London Vision for Growth.

Proactive and imaginative use of planning powers and tools is vital to supporting the continued success of the UK's second most productive urban district, delivering the housing, infrastructure and high-quality environment the place and its people need. The scale of West London, the challenges it faces and the opportunities it presents give unique scope for planning authorities to work together to address these issues.
West London's planning authorities have come together to make the most of this potential, work more closely with the Mayor, Transport for London, business organisations and other stakeholders and by working together, to make the most efficient use of resources of money, time and expertise.

Our work will find ways of tackling constraints on West London's growth, including:

  • Meeting West London's housing needs, particularly delivering affordable homes
  • Ensuring delivery of the physical, social, digital and green infrastructure needed to ensure growth is sustainable, supports a good and improving quality of life and maintains economic success.
  • Protecting and improving the quality of the environment.
  • Tackling constraints on sustainable growth like congestion, lack of connectivity across the area (and poor orbital links in particular), unequal outcomes for different people and weak productivity growth.
  • Working together to realise the potential of key development opportunities across West London, including the Golden Mile, Park Royal/Old Oak, Wembley and Brent Cross, and optimise its benefits for the sub-region.

Planning evidence base

Making sure planning policies are based on robust evidence is key to success of this work. Our programme is delivering a range of technical evidence needed to support planning policy preparation:



  • West London Strategic Housing Market Assessment: this study identifies likely housing needs and demands in West London over the period 2016-41. The final Report on Findings (October 2018) is here . An Addendum Report (November 2018) to take account of changes to national planning policy is here.
  • West London Small Sites Strategic Housing Land Availability Assessment: this study reviews the approach being taken by the Mayor in his draft London Plan to promoting housing delivery on small sites and outlines alternative approaches. A Non-Technical Summary is here.  The main report comprises two volumes:
    • Part A: Critique is here. Part A Appendices are here.
    • Part B: Delivery and Development Trends is here. Part B Appendices are here.

Flood risk

  • West London Strategic Flood Risk Assessment: this gives information about flood risks across the area, providing evidence to help ensure development is steered away from places most at risk and reducing the risk of flooding to residents and buildings. It can be found here.


  • Employment Land Review: this provides evidence about future demand for commercial and industrial floorspace and land and the extent to which these might be met by intensification, co-location with other uses (like housing), substitution by sites outside London or recycling of existing sites. It has a particular focus on the trends and likely future developments in the logistics sector and how these might affect demand for space. It can be found here.
  • Affordable Workspace Assessment: this will provide evidence about future demand for affordable workspace and ways of meeting it. It will be published in late 2019.


  • Strategic Infrastructure Delivery Plan: This will identify the larger-scale strategic infrastructure - including transport, energy, water, digital and social infrastructure (like health and education) that will be needed to support West London's future growth. It will be published in spring 2020.