I don't think I've ever known it. Every single line had delays, mainly
serious delays, or in the case of the East London Line complete failure.

Why? Well, according to 7222 1234, it was signal failure - I called up as I
was stranded. Appeared to be loads of different signal failures.

Odd.

Then when I finally got to Canning Town by bus, after giving up trying to
go from Plaistow, it said on the board beside the gates that most lines
were down because of the bad weather.

OK so what was it? And if it is the weather, how come one inch (if that) of
snow (that almost immediately melted) caused such chaos?

Took me two hours to get in this morning. Grrrr.