Lots of noise & shouting from outside, with a large vehicle involved, so I stick my head over the balcony to see a fire engine parked outside, firemen lifting a manhole cover & hosing down the adjacent area.
I popped down to find out what was happening, the external soil pipe that serves 5 flats is blocked at the bottom & it's all flooded into the ground floor flat. The poor girl who lives there can't get in touch with the rental agent or landlord & is abandoning flat to stay with friends.
The external pipes are the responsibility of the management company that does all the maintenance, I've left a message for them. If I have to flush the loo tonight it's going to cause a mess somewhere!