From the evening of 15 February to the morning of 21 February RMT members at Northfields Depot are striking.
Services on the Piccadilly Line will still run, but be liable to disruption and delays throughout the day- especially before 8am daily, and services may start later than normal.
This will be unpredictable in it's impact, so check at the time of travel for disruption.
A reminder that on Sunday 15 February there is also no Elizabeth line service until 11am east of Paddington, due to planned engineering work, also a late start (at 0745) to services between Ealing Broadway and Paddington due to other planned engineering work.