Does anybody know definitively if the Northern Line is operating on the upcoming Easter Monday(April 10th 2023)?
The reason I ask is that the "Future Dates" part of the "Status Updates" section of the TfL website shows no planned closures on the Northern Line for that day but the TfL Journey Planner is avoiding it as though it believes there to be no service. For example the Journey Planner is returning an itinerary for Old St station to Morden station of bus to Waterloo, NR to Wimbledon, bus to Morden.
Update. I reported the issue with the Journey Planner to TfL and, whether as a result of that or merely by coincidence, the issue is resolved and it is now using the Northern Line where appropriate for journeys on 10th April.