Farley Road is blocked just to the Selsdon (Southern) side of the junction with Queenhill Road. This is due to work by contractors working for Thames Water repairing a damaged sewer. Your councillors were not warned in advance so this is presumably emergency work.
I have spoken to the contractors at the site and the estimate for this work to be completed is 29th November 2023. There is a road sign elsewhere quoting 5th December 2023, which may indicate that there will be further work required after Thames Water have completed their repair.