The Government Says

Monitoring noise and vibration on the HS2 Phase One route (July 2026)

Monitoring noise and vibration on the HS2 Phase One route (July 2026)
Local copy of Birmingham_Noise_Monthly_Report_July_2026.pdf
Local copy of Brent_Noise_Monthly_Report_July_2026.pdf

https://www.gov.uk/government/publications/monitoring-noise-and-vibration-on-the-hs2-phase-one-route-july-2026

seen at 10:31, 14 October in Policy papers and consultations.