Notice of 24-hour work below ground at the Mandeville Road Vent Shaft site, Northolt
Work item: HS2-SCS-25-1245
Work Item Summary
- Project Phase
- Phase 1
- Region
- Brent and Ealing
- Location
- Mandeville Road
- Worksite Name
- Mandeville Road worksite
- Contractor
- SCS JV
- Type of works
- 24 hour working, Concrete break out, Tunnelling works
- Estimated Start Date
- 03/10/2025
- Estimated End Date
- 02/11/2025
What we are doing
From 3 October to 2 November 2025 we will work 24 hours a day, seven days a week below ground at the Mandeville Road Ventilation Shaft site.
This work is to connect the tunnel to the main shaft and needs to take place 24 hours a day for safety and engineering reasons.
We will be working inside the tunnel about 25 metres below ground.
We will remove the tunnel lining segments from the upper part of the tunnel and break out the concrete between the tunnel and the bottom of the shaft. The broken concrete will then be removed through the tunnel. To reduce night-time noise, we will restrict concrete cutting and drilling activities to between 8am and 10pm daily.
Download information relating to these works
Find out more about
If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]