Transport for London (TFL) consultation - making Hogarth Roundabout safer, update

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Consultation has concluded

This consultation has now closed. You can read the full report, including our responses to the main issues raised here.


Summary of consultation outcomes

The consultation produced a range of views, most notably on the proposal to close the direct access between Church Street and the roundabout, and associated concerns around the alternative routes that would need to be taken to enter and leave the Old Chiswick area. 

We listened carefully to these views. Having taken these concerns on board, we have decided not to proceed with this aspect of the scheme. This means the existing access for residents, businesses, and the emergency services will be maintained on Church Street.

However, the need to improve safety at the site remains and we will now progress with other elements of the proposed scheme to the detailed design stage. We remain confident this work will improve safety risk at the site, addressing known collision locations and reducing overall risk.

This work will focus on four key areas:

  1. Lowering the speed limit from 40mph to 30mph at the roundabout and approaches
  2. Improving advanced directional signage on all approaches to the roundabout, as well as the signs and lines on the carriageway of the roundabout itself
  3. Closing the western side of the Mawson Lane slip road to address the specific safety risk of westbound vehicles mounting the kerb and entering and exiting into the first lane of the A4
  4. Improving the subway, including accessibility and wayfinding improvements, replacing worn assets such as signs and lighting, and deep cleaning the subway.

We will continue to monitor collision data at the roundabout. When these changes have been implemented, we will review whether we need to take further action to improve safety.

TfL and Hounslow Council will continue to work with on a design and provide updates on progress to stakeholders. We are currently working towards making these improvements in 2026. We will keep the local community informed as our plans are confirmed.


This consultation has now closed. You can read the full report, including our responses to the main issues raised here.


Summary of consultation outcomes

The consultation produced a range of views, most notably on the proposal to close the direct access between Church Street and the roundabout, and associated concerns around the alternative routes that would need to be taken to enter and leave the Old Chiswick area. 

We listened carefully to these views. Having taken these concerns on board, we have decided not to proceed with this aspect of the scheme. This means the existing access for residents, businesses, and the emergency services will be maintained on Church Street.

However, the need to improve safety at the site remains and we will now progress with other elements of the proposed scheme to the detailed design stage. We remain confident this work will improve safety risk at the site, addressing known collision locations and reducing overall risk.

This work will focus on four key areas:

  1. Lowering the speed limit from 40mph to 30mph at the roundabout and approaches
  2. Improving advanced directional signage on all approaches to the roundabout, as well as the signs and lines on the carriageway of the roundabout itself
  3. Closing the western side of the Mawson Lane slip road to address the specific safety risk of westbound vehicles mounting the kerb and entering and exiting into the first lane of the A4
  4. Improving the subway, including accessibility and wayfinding improvements, replacing worn assets such as signs and lighting, and deep cleaning the subway.

We will continue to monitor collision data at the roundabout. When these changes have been implemented, we will review whether we need to take further action to improve safety.

TfL and Hounslow Council will continue to work with on a design and provide updates on progress to stakeholders. We are currently working towards making these improvements in 2026. We will keep the local community informed as our plans are confirmed.