BBC2 goes to Ceefax in the early hours of the morning go to it.
(Ceefax is a service which shows News, Sport, Weather, UK Markets, Headlines and Business News)
ITV1, 2, 3 and 4 go to ITV Nightscreen
(A service which displays what is on in the next 7 days)
Both Ceefax and Nightscreen are T.B.I.S.
(Text based Information Service)