Update: Works at Mandeville Road site, Northolt

What we are doing

Please see below updated schedule of works at the Mandeville Road Vent Shaft site. Due to a programme update, some of the dates have changed since we have updated you in October.

Update: 24/5 on-site works – 5 February to 16 October 2026

Working hours:  24 hours a day, Monday to Friday

We are building reinforced concrete walls at the bottom of the main shaft, 23 metres below ground.

Site works

Working hours: 8am to 6pm Monday to Friday and 8am to 1pm Saturdays. We may need to work until 6pm on some Saturdays.  The works include as per below:

Ongoing until 3 March 26 – cable diversion works

• Cable diversion works on Mandeville Road until 3 February 2026 and Badminton Close
• We are demolishing three garages and building a new site entrance on Badminton Close

Ongoing until summer 2026 – headhouse works

• Ground excavations and breaking concrete
• building reinforced concrete walls

Concrete pours for headhouse base slab 

• Six days in both February and March 2026
• There will be deliveries to site from 4am
• Concrete pours will start at 6am and will finish before 10pm

We will keep you updated if any changes in above schedule.

HS2 is undergoing a comprehensive reset to ensure it can be built efficiently and for the lowest reasonable cost. This work is being carried out in stages and will be completed in 2026. We will provide you with updates on the reset and what this means for our plans to build the railway in your area.

Download information relating to these works

• Update: Works at Mandeville Road site, Northolt

Find out more about

• Brent and Ealing

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