I have had the 'pleasure' of working for all three and still do. The content is very much dependant on the News Editor (similar role to a newspaper's editor as opposed to the bloke who edits the footage) who's on duty at the time. ITN has had some very good ones, Munroe Forbes for instance. Some of the ITN old timers (and some of them are still working) have seen more conflicts than many frontline UK forces chaps. The coverage of 80's war torn Afghanistan by Sandy Gall and his crew was superb but they had to live with the Mujahadim for months to acquire it (legend has it that to show good faith they helped prime AP mines).
Barnes was lovely, professional and an intelligent jounalist; a representative of the good old days of news when the story came first and the personality second -she will be missed.
whatever; haven't had a tv licence for 10 years and don't watch tv, most of which I can't stomach. Have been in other people's houses and noted that pretty much anything "factual" is anything other than objective, being biased, or emotional to some degree. This is pretty much the case with all British media and I notice the difference when visiting foreign media websites, some of which appear to make serious efforts at being objective. One arab newspaper for example DID impress in this regard.