National Grid holds Kings Avenue site public information event

National Grid’s £1 billion tunnels project in South London enters construction phase

National Grid recently held a public information event to update locals about works taking place at its Kings Avenue site as part of its London Power Tunnels project.

The second phase of the project, which will run between Wimbledon and Crayford, follows the success of National Grid’s original London Power Tunnels project. This was a seven-year, £1bn scheme to rewire the Capital, which was opened by His Royal Highness The Prince of Wales in 2018.

The works are essential to replace existing electricity cables which currently run beneath the road network and are coming towards the end of their useful life. The tunnels, which will span over 32.5km in length and seven London boroughs, will carry high voltage electricity cables. By placing the cables in deep underground tunnels, it will reduce major disruption to the Capital. Construction will start in March 2020 and last until 2026.

As part of the project, National Grid is building a tunnel shaft and headhouse at its Kings Avenue site, located at the junction of Kings Avenue and Acre Lane, in order to drive a tunnel boring machine to our site at Wimbledon. A public information event was held on Wednesday 12th February, and gave the local community an opportunity to find out more about the construction works and ask the project team questions.

Information displayed at the event is available to view here.

  • If you need to get in touch with the team, please contact National Grid on:
  • Freephone helpline number: 0800 783 2855 (lines open 9am to 5pm, Monday to Friday)
  • E-mail:
  • LPT website: