From Transport for London (TfL) – potential strike dates have been announced.
If the strikes go ahead, Tube services will be affected from: around 21:00 on Monday 28 April until the morning of Thursday 1 May, as well as approx. 21:00 on Monday 5 May until the morning of Friday 9 May.
Here is a press release laying out the TfL changes anticipated or already in the works to make the system more user friendly for all.