This one has been planned for a while now, but the carriage stickers in the trains have now all been updated to reflect that there will be no Victoria line between Seven Sisters and Walthamstow between the 8th and 30th of August.
The work is to allow a renewal of a crossover at Walthamstow which at the moment means only 24 trains an hour can run – after the works, the Victoria line will be able to run 36 trains per hour in the peak – that’s one every 100 seconds. You can read the full TfL Press Release here, but it does mean that once complete, more trains will run to Walthamstow too.
Replacement buses are running throughout the duration of the works, hence the pecked blue line on the carriage maps!
No Victoria line