London Assembly Demands Action as Tube Noise Complaints Reach Boiling Point

Assembly Members call for a full investigation into escalating Underground noise, with residents and commuters saying worsening screeching is affecting health, wellbeing and confidence in TfL's maintenance programme.

The familiar screech of London Underground trains negotiating tight curves has become more than just an irritation for commuters. For thousands of residents living above or alongside the network, it has become a daily quality-of-life issue—one that London Assembly Members now say requires far greater transparency and a coordinated city-wide response.

The London Assembly has called on Transport for London (TfL) to publish a clear strategy explaining how it intends to tackle escalating Tube noise after concerns that maintenance activity aimed at reducing the problem has slowed while complaints continue to rise.

The issue is particularly acute in parts of Brent, Kennington, Camden, Islington and South Wimbledon, where residents have repeatedly raised concerns about persistent high-pitched wheel squeal and vibration generated as trains negotiate curved sections of track.

Noise Levels Comparable to a Helicopter

On some sections of the Underground network, noise levels have been recorded at more than 100 decibels—similar to standing close to a helicopter during take-off.

The distinctive sound is created by the friction between steel wheels and curved steel rails, particularly where rail corrugation develops over time. While the phenomenon is well understood by railway engineers, controlling it across one of the world's oldest metro systems remains a significant engineering challenge.

For passengers, the experience is an uncomfortable part of the daily commute. For residents living above the network, however, the impact can extend well beyond station platforms, disrupting sleep, affecting wellbeing and generating growing frustration.

Questions Over TfL's Maintenance Strategy

Between 2020 and 2022, TfL carried out an intensive programme of rail grinding to smooth track surfaces and reduce noise.

That programme has since evolved into what the organisation describes as a more targeted, data-led approach, prioritising interventions where engineering data indicates they will have the greatest benefit.

However, Assembly Members have questioned whether that change has reduced the frequency of preventative maintenance and whether residents are now experiencing higher noise levels as a result.

Labour's Transport Spokesperson on the London Assembly, Elly Baker, has written to TfL Commissioner Andy Lordrequesting far greater transparency around the methodology, effectiveness and long-term strategy behind the current approach.

She argues that while TfL has highlighted initiatives such as train coasting to reduce noise, little publicly available evidence has been provided to demonstrate the scale of improvements or explain when similar measures could be extended to the worst-affected parts of the network.

Calls for a City-Wide Investigation

Speaking after raising the issue with the Mayor, Baker called for a comprehensive investigation into Tube noise across the capital.

She believes the problem extends far beyond isolated hotspots and should be examined alongside long-term decisions surrounding maintenance budgets, infrastructure renewals and future investment.

Without clearer information, she argues, residents are losing confidence that their concerns are being properly understood or addressed.

The Assembly Member is also seeking more consistent publication of data relating to rail grinding, maintenance activity and other engineering interventions intended to reduce noise.

Mayor Promises Greater Transparency

Responding to questions at City Hall, Mayor Sir Sadiq Khan acknowledged the significant impact excessive Tube noise has on both passengers and neighbouring communities.

He confirmed that TfL continues to tackle rail corrugation through an expanded maintenance programme supported by a £9 million dedicated rail grinding budget during 2025/26, increased from £8.1 million previously.

The Mayor also highlighted the unique challenge of maintaining the world's oldest underground railway, noting that London's historic infrastructure presents engineering complexities unlike those found on newer metro systems.

Alongside conventional rail grinding, TfL is trialling improved grinding techniques and varying train speeds through particularly noisy curves in an effort to reduce wheel squeal without compromising operational performance.

Sir Sadiq also indicated he expected TfL to provide Assembly Members with significantly more detailed information on the work being undertaken.

Engineering Solutions Continue

TfL insists reducing noise and vibration remains a priority across the Underground network.

The organisation says recent engineering work has included removing insulated rail joints, improving track condition and carrying out extensive rail grinding over the past six months.

Future interventions will continue to focus on targeted maintenance of switches and crossings, ballast renewal and the removal of redundant infrastructure that contributes to excessive vibration and noise.

The transport authority argues that while it cannot eliminate all noise generated by a railway that has evolved over more than 160 years, ongoing investment in track renewals and modern maintenance techniques will continue to improve conditions across the network.

Balancing Heritage with Modern Expectations

London Underground's age is both one of its greatest strengths and one of its greatest engineering challenges.

Unlike newer metro systems designed with modern alignment standards and noise mitigation technologies, much of the capital's railway still follows Victorian-era tunnels and tight curves that inevitably generate higher wheel-rail forces.

Yet as passenger expectations evolve and urban living becomes increasingly dense, tolerance for excessive transport noise continues to diminish.

The Assembly's intervention reflects a wider shift towards treating noise pollution not simply as an operational inconvenience, but as an environmental and public health issue deserving the same strategic focus as air quality, reliability and passenger safety.

For TfL, the challenge is no longer just reducing the screech of steel wheels on steel rails.

It is restoring confidence that London has a long-term plan to make one of the world's oldest metro systems quieter, more transparent and better suited to the expectations of a modern global city.