Television-coverage of incoming state visits to the UK:
During visits from major countries such as the US (2003 & 2011), China (1999 & 2015), Japan (1998), Germany (1998), France (2008), Russia (2003) and Spain (2017): Full coverage of all events on BBC News Channel (launched in 1997) and Sky News (launched in 1989).
From smaller countries such as The Netherlands: With the exception of the state visit from Ireland in 2014 (due to the special history between the two countries), nothing at all. - So, thank god for The ITN Royal Family Channel.