Key Points
- Chancellor John Healey announced a tax reform allowing regional mayors to retain a share of local income tax revenue.
- Strategic authorities and local councils will eventually be permitted to retain 100 per cent of their business rates.
- The fiscal devolution is designed to enable local authorities to directly finance major regional infrastructure schemes, including the long-delayed Bakerloo Line extension.
- The proposed Underground extension would run south-east from Elephant & Castle via Old Kent Road and New Cross Gate through to Lewisham.
- Mayor of London Sir Sadiq Khan previously introduced the “Bakerloop” express bus service to demonstrate demand along the proposed route following refusal of central government funding.
Lewisham (South London News) October 29, 2026 – Chancellor of the Exchequer John Healey announced a sweeping structural overhaul of local government finance during the Budget presentation on Wednesday, granting regional mayors the authority to retain a proportion of income tax generated within their jurisdictions, while confirming that mayors and local councils will ultimately be permitted to keep 100 per cent of their business rates.
As stated by transport correspondents reviewing the fiscal measure, Mr Healey explicitly identified this reform as a mechanism that would empower regional leaders to independently finance long-term infrastructure developments, highlighting the Bakerloo Line extension in London as a primary example of a project that could benefit from the new financial model.
How Will the Strategic Devolution of Income Tax and Business Rates Function?
Under the terms of the financial strategy outlined by the Treasury, local leadership will receive expanded direct control over revenue streams raised within their boundaries. The policy shift marks a departure from centralized Treasury allocations toward regional self-funding mechanisms.
According to fiscal analysts evaluating the budget documentation, the phased implementation plan allows strategic authorities to capture growth in local taxation to service infrastructure bonds and private financing frameworks directly, removing the requirement to seek full capital grants from central government departments for regional transport projects.
Why Has the Bakerloo Line Extension Suffered Repeated Delays?
The proposal to extend the Bakerloo Line south-eastward from its current terminus at Elephant & Castle down to Lewisham—servicing key intermediate hubs including Old Kent Road and New Cross Gate—has been planned for several decades but stalled due to funding shortfalls.
As documented by regional reporters tracking municipal policy, successive central government administrations have declined to provide capital grants for the construction phase. Notably, former Chancellor of the Exchequer Rachel Reeves, a native of Lewisham, was among previous Treasury leaders who did not allocate federal funding for the project during her tenure.
To demonstrate passenger demand along the planned corridor, Mayor of London Sir Sadiq Khan introduced the “BL1 Bakerloop” express bus service. Transport for London launched the route as an interim measure to serve commuters between Elephant & Castle and Lewisham while illustrating the potential transit volume of a dedicated rail connection.
Background of the Particular Development
The Bakerloo Line extension has remained a strategic priority for Transport for London (TfL) and the Greater London Authority (GLA) within the wider infrastructure roadmap for South East London. South East London currently has a significantly lower density of London Underground stations compared to areas north of the River Thames, relying predominantly on National Rail networks, the Docklands Light Railway (DLR), and London Overground services.
Initial consultation processes for extending the line beyond Elephant & Castle were formally established in the 2010s, identifying Old Kent Road as a primary opportunity area for housing growth and urban regeneration. However, project progression was repeatedly suspended due to capital funding constraints, compounded by the financial shock experienced by TfL during the COVID-19 pandemic when passenger fare revenues sharply declined. Central government financial agreements provided emergency operational support to TfL but explicitly excluded long-term capital allocations for major expansion projects like the Bakerloo Line extension or Crossrail 2.
The announcement of revenue-retention powers for regional mayors represents a shift toward local tax incremental financing. By allowing the GLA to retain local business rates and a portion of income tax receipts, the Treasury shifts the financial responsibility of capital generation to municipal leadership, linking infrastructure delivery to local economic output.
Prediction: How This Development Can Affect South East London Commuters and Businesses
The implementation of income tax sharing and full business rate retention is anticipated to influence residents, commuters, and commercial enterprises across South East London in several distinct ways:
- Accelerated Project Timeline: If the Greater London Authority utilizes its expanded revenue retention powers to raise capital debt, formal construction timelines for the extension could be finalized earlier than previously projected.
- Enhanced Transport Capacity: Commuters traveling between Lewisham, New Cross Gate, Old Kent Road, and Central London would gain access to direct Underground services, reducing reliance on surface bus routes like the BL1 Bakerloop and relieving congestion on existing National Rail lines into London Bridge and Cannon Street.
- Property and Commercial Regeneration: The confirmation of a viable funding framework is expected to impact property markets and commercial development along the Old Kent Road corridor. Local authorities have previously tied thousands of proposed new housing units to the delivery of improved mass transit capacity.
- Local Rate Adjustments: Businesses operating within the affected boroughs may experience changes in local commercial policy, as local councils and the mayoral office balance long-term infrastructure debt service against business rate structures.
