The title says it all, really: just a minute's delay this morning on the Bakerloo line from Waterloo to Edgware Road (trying something new today). That's another £2.50.
In unrelated news, I'm in early as have swapped drop-off and pick-up duties for my daughter with my wife for the day (she's planning to go out and paint the town a very tasteful maroon).
UPDATE: home without incident today. Well done TfL, you managed to do what you should be doing with every single journey anyone takes on your network.