In between all the news reports of chaos on many of the main lines out
of London, as well as the airports, I took a look at the TfL Live travel
news page. This has lots of warnings of problems on other networks, but
unusually shows a "Good service" on every LU line.

This is better then on most ordinary days, but seems exceptionally good
considering the weather. So, is the service really running as well as
claimed, or is the Web page being too optimistic?