It was a truly "wonderful" evening for me - I was to meet my mother at
Heathrow, so...

- when changing from Central to Piccadilly at Holborn I heard that
Piccadilly was suspended between Hammersmith and Cockfosters
- I went back to Central (slowly walking in a huge crowd), went to
Oxford Circus, and changed to Bakerloo
- went to Baker Street and after 10 minutes wait (I thought there was
supposed to be more frequent service on that day, not less
frequent!!!) changed to Hammersmith & City
- realized that I don't know whether Piccadilly is running from
Hammersmith or from Turnham Green (what exactly between means here?)
so switched to District at Edgware Road
- another 10 minutes wait in some train without any indication of the
destination (why the hell Hammersmith&City/Circle trains serve this
part of the District?) and I'm on my way to Earl's Court
- Earl's Court is severely overcrowded, waiting another 10-ish minutes
for District train to Ealing Broadway (the announcer recommends to
change to Piccadilly at Acton Town, so I suppose my decision to skip
Hammersmith was correct)
- train arrives at the wrong platform, but at least it really goes to
Ealing Broadway
- one station later train stops for yet another 10 minutes (passenger
alarm on the previous train - *%^£$(%*£!!!!)
- finally train arrives at Acton Town, I run into Piccadilly train
standing across the platform (like a LOT of other people), and the
train goes - TO UXBRIDGE (there was no indication on the train, and no
announcement from the driver until the doors closed...)
- I exit at Ealing Common, go to opposite platform, wait for the train
for yet another 10 minutes, and then District line train comes - but
the train is "not in service"... ******!!!
- 5 minutes later Piccadilly line train finally arrives, I go back to
Acton Town (where that train terminates, so the platform is once again
overcrowded), change to opposite platform, finally get a train clearly
marked "Heathrow", and after just 5 minutes of standing at the
platform train departs...
- some time later I'm finally at Heathrow (phew!) and find out that my
mother's plane was delayed due to "lack of available gates" in
Heathrow's Terminal 1, and despite being 90 minutes late I was only 15
minutes late to her actual arrival ("phew!" 3 times)

On our way back Piccadilly was so overcrowded, that we skipped our
stop. But at least that was on the road home...