24-hour works at Mandeville Road site

What we are doing

From 16 June to 19 September 2025 (14 weeks), we will work 24 hours a day on Mondays to Fridays to connect the main ventilation shaft to the upline tunnel.

We’ll be working 21 metres below ground level, at the bottom of the shaft, to remove a concrete slab between the shaft and tunnels.

The works will include coring into concrete and wire cutting below ground and removal of concrete blocks from the shaft using a crane.
We’ll break the concrete blocks further above ground during daytime hours (8am to 6pm) before removing these from site.

You may notice vibration and noise from the construction machinery. Overnight activities will be restricted to minimise disruption as much as possible. The crane will be in operation overnight to remove the concrete blocks from the shaft. The blocks will be removed overnight when other works are not taking place on site, for safety reasons. Site lighting will be in operation overnight during these works. We’ll minimise this as much as we can.

We’ll use noise barriers to reduce noise, where possible, and will continue to monitor noise and vibration levels. We apologise for any disruption or inconvenience the extended working hours may cause.

Download information relating to these works

• Notice of 24-hour works at Mandeville Road site

If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]