Strategic industrial locations (SILs)
Strategic Industrial Locations (SILs) are designated in the London Plan, a spatial development strategy setting out an economic, environmental, transport and social framework for the development of London.
SILs exist to ensure London provides a sufficient number of quality sites, in appropriate locations, to meet the needs of industrial and related sectors, such as logistics, waste management and environmental industries, utilities, wholesale markets, and so on.
There are two types of SIL:
- Preferred Industrial Locations (PILs), which are particularly suitable for general industrial, light industrial, waste management, and so on.
- Industrial Business Parks (IBPs), which are particularly suitable for research and development and other activities that require a better-quality environment.
Most SILs are more than 20 hectares in size, although some smaller areas of around 10 hectares can be of strategic importance where there is pressure on industrial land. Generally, SILs are located close to strategic transport infrastructure such as roads, rail, rivers, canals and safeguarded wharves.
The Mayor, and individual boroughs, are expected to promote, manage and protect the SILs.
Development proposals should meet the following criteria:
- They conform to the broad industrial type of activities that are prescribed as allowable.
- The strategic consolidation of the SIL should be included in an opportunity area planning framework or borough development plan.
- The proposal involves the provision of employment workspace to meet identified needs for SMEs or new emerging industrial sectors.
- The proposal involves small scale ‘walk to’ services for industrial occupiers, such as workplace nurseries, cafes and so on.
You can find out more and see the list of SILs here.
See also: Preferred industrial locations.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.

























