National Grid holds Hurst 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 Hurst 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.

National Grid is building two tunnels at its Hurst site (one towards Eltham and one towards Crayford). A shaft will be built to be able to dig the tunnels and a headhouse will be built over the shaft, to provide ventilation and a permanent access point for the tunnels. A temporary access road will also be built between the A223 North Cray Road and Stable Lane, to accommodate construction vehicles, reducing additional traffic on local roads.

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: