2006 (Trial Service)
ITV HD was first launched in 2006 as part of a trial broadcast of terrestrial HDTV in the London area. When this trial ended, the service was closed down.
Interestingly, this trial service had its own idents. They would start out with the ITV HD logo at the center, that would then "open" in a manner similar to the "Emotion" idents that were running on ITV1 at the time. However, instead of images of people showing emotions, the ITV HD idents featured scenes and landmarks in London.
2008–2010 (Full Service)
In June 2008, ITV HD returned as an interactive service exclusive to the new satellite platform Freesat.
2010–2013
ITV1 HD launched as a standard channel on all platforms in April 2010, becoming a full time simulcast with ITV1.
2013-present
