Kings Avenue

We will need to build a permanent shaft and headhouse at our site at Kings Avenue, in order to drive a tunnel boring machine to our reception site at Wimbledon. The site will also need to receive a tunnel boring machine from our existing substation site at New Cross. Excavated material would also be removed at this site.

Our site on Kings Avenue is located at the junction of Kings Avenue and Acre Lane.

It is our intention to build the tunnels and shafts under our permitted development rights, which means we do not need planning permission for the entire project.

There are points along the tunnel route where we need to build headhouses to cover the shafts. Headhouses are required for ventilation and as a permanent point of access for the tunnel once it is built. We are seeking planning permission for these where they are not on our operational land, including at our site on Kings Avenue.

We have now submitted our planning application to the London Borough of Lambeth to build a headhouse at our site on Kings Avenue.

The submission of our planning application follows a series of public information events we held at various locations across our route earlier this year, where members of the public found out more about our works and the wider project and gave us some helpful feedback.

 Key facts:

  • Dimensions: The shaft will be approximately 15m in diameter and 35m in depth. The headhouse will have a maximum footprint of 9.5m long by 6m wide, reaching a maximum height of 4.6m.
  • Working hours: 24-hour working would be required while we build the tunnel. Above ground work would take place from 7am to 5pm Monday to Friday, and 8am to 1pm on Saturdays. During the night our works will largely take place below ground. There would be no work on Sundays or Bank Holidays. Occasional out of hours work may be necessary and we will keep you informed about this.
  • Traffic movements: We anticipate there would be approximately 38 HGV movements per day during peak construction activity, while we build the tunnel.
  • Access: Our construction vehicles will leave the site from Acre Lane or Kings Avenue, before joining the A23 and/or A205.


  • We plan to start works in March 2020 until June 2025.
  • The tunnel will be built between September 2020 and November 2021.
  • If our application for the headhouse is approved, this will be built between September 2022 and March 2023.

Planning submission drawing.