Technical issues stopped the three images appearing in the previous post. Here they are:

We have been notified of a a delay to the Road Closure currently in place on Breakspear Road South that will require a 48 hour extension to the works. This will mean that the Road Closure will now be in place until Friday 20/02 at 7pm (it was due to be completed by Wed 18/02 at 7pm).

The reasons for the delay are shown below (please note this information has been updated on the LBH Website and will be communicated to residents by HS2 asap).
Breakspear Road South – 24/7 Road Closure over 5 Days – Sat 14/02 at 7am until Fri 20//02 at 7pm

HS2/SCS have agreed a Road Closure of Breakspear Road South that will take place 24 Hours a Day over a 7 Day Period from Sat 14/02 at 7am until Fri 20//02 at 7pm.
Update 17/02 – HS2/SCS are advising that the Trial Hole element of these works will not be completed in time for the originally planned reopening of the road on Wed 18/02 at 7pm and requested a further 48 hours on the Road Closure to complete the works (now reopening Fri 20/02 at 7pm).
The reasons behind the delay are detailed as being in part the ongoing wet weather conditions slowing things down, and the depth of the Sewer Connection that they have found to be at 3.3 metres. This was deeper than expected and thus required more time to locate in the footway and now HS2/SCS have to dig a trench across the width of the carriageway at this depth to make sure there are no unknown Services in the way for when the Sewer Connection is carried out.
These works have been scheduled to take place during the Feb 2026 School Half-Term to cause as little disruption as possible but we are aware there is never a good time to close this road.
Previously LBH had been informed by HS2 that all Road Closures on Breakspear Road South would be completed in 2025 but the following works are now required and unfortunately due to the methodology of the works they will require Full Road Closures to complete them:

• Rip-Rap Works – to install permanent paving and bollards to make safe the run-off area around a Drainage Swale
• To carry out a Trial Hole across the whole carriageway for a Sewer Connection that was previously removed during HS2 Enabling Works (this is a new instruction from HS2 not previously known about by SCS or LBH)

Please note – once the Trial Hole data is received, HS2/SCS will need to complete the Sewer Connection which will require a further Road Closure that they would look to request for the May School Half-Term or the School Summer Holidays.

from HS2

The water treatment plant removal works are now ongoing until 28 February 2026. Works have been extended to accommodate access for other works.

These works will be 24/7 due to site constraints and the safety of the workforce. There will be lorry movements to remove the equipment during the day only. We will be emptying the treatment plant used to store water for our tunnel boring machines as it is no longer required. We will do this by using a hose connection into a silt buster system. Once emptied, we will disconnect and disassemble the plant and then remove from site during the day.

You may notice crane movements to lift the equipment for the water treatment plant and disassembly. Due to constraints on site some crane lifting may happen overnight. You may notice lights on site during nights, but we will position lights to avoid shining directly onto nearby properties. You may also hear white noise alarms during the day to ensure safety on site during the transportation of equipment. We will continue to monitor our working methods and noise levels to reduce disruption.
more info

https://assets.hs2.org.uk/wp-content/uploads/2026/01/HS2-SCS-25-1586-Update-to-247-working-to-remove-water-treatment-plant-at-West-Ruislip-Portal-Hillingdon_-February.pdf