Paul Corfield wrote:
There was an endless flurry of tweets from National Rail telling
people that last trains with a whole pile of operators running from
London terminals were held for 20-30 minutes so that people caught
their trains home. It was an admirable effort and showed that
flexibility had been designed into the arrangements.

Looking at LDBs at about 2am on Saturday morning, there was a service of
some kind on pretty much every route from every London terminal, long
distance and suburban, even to places like Newcastle. The last last trains
were at about 3am. The one terminal that looked lacking in services was
Liverpool St - one Norwich, one Southend, lots of Shenfield but nothing on
West Anglia (unless it had already gone by then).

Theo