Over the 2026 summer, the UK planning sector saw two critical developments. The Greater London Authority (GLA) shared the Draft London Plan 2026 for consultation in mid-July, followed by the revision of the National Planning Policy Framework (NPPF) on 17 August. The NPPF revision deserves a separate analysis, so this piece focuses on the Draft London Plan 2026.
Planning, at its core, is the management of land and buildings. Its job is to make sure the right development happens in the right place: enough homes and workplaces, without giving up the qualities that make those places worth living and working in.
The question for any strategic plan is this: Does it deliver that? With the Draft London Plan 2026, the answer depends on where in London your development sites sit.
Spatial Redistribution of “Good Growth”
From its opening lines, the Draft London Plan 2026 sets out a spatial strategy necessitated by current macroeconomic conditions and infrastructure timelines. With central London’s capacity constrained by the delayed delivery of major transport projects, the GLA is executing a decisive outward redistribution of housing targets. The strategy acknowledges that Inner London can no longer shoulder the 85,000-home annual target alone.
Policy Framework: MBUL and PV (Place Visions)
This structural pivot relies heavily on Chapter 2’s MBUL (Making Best Use of Land) policy family. MBUL represents a clear maturation of the London planning framework. Where the 2021 Plan relied heavily on qualitative design negotiations (which often led to lengthy disputes over local suburban character), MBUL2 introduces quantitative clarity. By setting clear density baselines tied directly to public transport access, the policy gives developers a firmer foundation for viability modeling. It effectively establishes a presumption of density, meaning local planning committees will need robust, evidence-based arguments to justify why a site should not meet these optimisation targets.
List of MBULs in the Draft London Plan 2026: They define the principles of “Good Growth” by underlining “best use of land”
To translate macro targets into site-specific policy, Chapter 6 introduces the PV (Place Visions) framework. Read alongside MBUL, these policies set out the spatial priorities across the capital:
- PV1 (Brownfield-First Opportunity Areas): Focuses delivery on previously developed land with underutilised capacity.
- PV2 (Central Activities Zone-CAZ): Protects and strengthens the core commercial engine of London.
- PV3 (Town Centres and High Streets): Directs housing-led intensification along established high street corridors.
- PV4 (Strategic Economic Clusters and Corridors): Supports commercial growth outside the CAZ and traditional industrial land.
- PV5 (Industrial Land Supporting Housing Growth): Establishes terms for releasing surplus industrial plots for residential development.
- PV6 (Metropolitan Open Land): Maintains protection for open land, subject to narrow statutory exceptions.
- PV7 (Sustainable Development and Enhancement of the Green Belt): Sets criteria for justified Green Belt and Grey Belt release.
- PV8 (Strategic and Local Views): Preserves key sightlines to protected landmarks and heritage assets.
Read together, MBUL and PV reflect a strategy reacting to central spatial constraints. Because central mega-projects have stalled and key Inner London Opportunity Areas have seen capacity reductions, the GLA has exported inner-city density expectations out to Zone 3, 4, and 5 BFOAs and Grey Belt fringes.
20-year plan key diagram for London: Large arrows show strategic growth corridors and green/yellow circles indicated “broad locations for growth. One can see Green-Belt Future Candidate Residential-Led Mixed Use from the diagram.
Redefining Brownfield (PV1)
It is worth examining how “brownfield” is interpreted in this draft. The term often brings to mind derelict industrial yards, but PV1 applies a much broader definition.
BFOAs cover previously developed land currently in active use that performs below its spatial capacity. This includes low-density retail parks with large surface car parks, surplus public sector estates, commercial edges of town centres, and small infill plots suitable for brownfield registers.
Brownfield-first in the 2026 draft is less about clearing abandoned land and more about finding hidden capacity on functioning sites. This is why site optimisation sits at the front of the spatial strategy, well before edge-of-settlement releases are considered.
Rethinking the Central Activities (PV2, PV3)
Beyond housing metrics, the draft plan introduces a multi-layered spatial framework that replaces generic Central Business District (CBD) terminology with a commercial hierarchy. Rather than viewing the city core as a monolithic engine, the plan establishes two distinct operational layers: the Central Activities Zone (CAZ) and a structured network of Town Centres.
- The Central Activities Zone (CAZ): Positioned as the global, iconic heart of London and the primary driver of the UK economy, the CAZ is planned as a dynamic environment where innovation, culture, commercial activity, and high-value employment intersect.
- Town Centre Hierarchy: Mapped across Greater London, town centres are classified according to their specific scale and character, ranging from International destinations down to Metropolitan, Major, and District centres.
Crucially, the 2026 spatial map incorporates forward-looking designations, identifying ‘Future Metropolitan’ and ‘Future Major’ hubs (such as key corridors around Stratford, Canary Wharf, and Outer London centres). This classification framework allows planning decisions, transport investments, and night-time economy policies to align with the actual character and future growth paths of specific locations, rather than applying blanket land-use rules.
London town centre network: Strategic and future potential town centres.
Outer Suburbia Pressure
Central brownfield intensification alone cannot bridge the gap between London’s historic delivery rate (hovering around 30,000 homes annually) and the 85,000 annual target set by national government. To address this, PV7 permits the selective release of Green Belt and newly defined Grey Belt land along the urban edge.
However, this release comes with strict commercial conditions. Schemes on released land face a 50% affordable housing requirement, alongside tighter carbon standards. Cash contributions to carbon offset funds are being phased out in favour of mandatory on-site carbon reduction and low-carbon materials.
This creates a distinct viability test for Outer London edge sites. Delivering up to half of a scheme as affordable housing is a heavy requirement in areas where sales rates and land values sit well below central zones.
Furthermore, PV7 requires released edge sites to sit within short walking distance of a frequent rail service or high-quality bus corridor. Where that transport link does not exist, it must be created.
On central sites, public transport infrastructure is largely a cost already submerged in land values. On Outer London and Grey Belt edge sites, new bus corridors, active travel links, schools, and utility upgrades often need funding. Combining a 50% affordable housing quota with significant infrastructure requirements creates a viability decision for developers. New housing supply may concentrate on the outer sites that already possess strong transport links.
Rail stations identified as suitable to accomodate major residential growth, adjacent to Green Belt
Enabling SME Developers: Fast-Track Routes
Alongside these macro viability challenges, the draft offers a practical, enabling route for smaller housebuilders who usually struggle with complex planning negotiations.
- Small Sites Design Code: Provides standardised rules for backland, infill, and suburban densification on plots up to 0.25 hectares.
- The 20% Fast-Track Route: Allows mid-sized housing projects (10 to 35 units) to bypass costly Financial Viability Assessments (FVAs) by agreeing to a flat 20% affordable housing contribution upfront.
These mechanisms reduce upfront planning risk for SME developers, and speed-up their planning applications waiting in local councils.
Strategic Outlook: Land Availability vs Development Viability
The Draft London Plan 2026 represents a pragmatically driven shift in strategy. It attempts to balance firm negotiations with major developers while streamlining the system for smaller infill builders.
The core challenge over the coming cycle will be managing the tension between land protection and development economics. The plan aims to safeguard Metropolitan Open Land while pushing for high housing numbers across the outer suburbs. Every site protected leaves more volume for remaining areas to absorb; every edge site released carries an infrastructure and affordable housing requirement that must stack up financially.
Ultimately, the plan’s success will not be measured by policy length or density tables, but by whether these outer borough frameworks can deliver buildable, financially viable schemes on the ground.
note: All images are taken from the Draft London Plan 2026.