Nicky, you are suggesting that news voiceovers came in in the early 1990s, but actually, ITN had voiceovers for First Report, News at One, and News at 5:45, between about 1974 and 1987. When Leonard Parkin retired from News at One, the programme went through a minimalist period without a voiceover, only getting them back for a short while in the original News at 12:30 silver incarnation, losing them again when the colour scheme changed to Salmon Pink and Dark Brown.
Overall then, ITN had voiceovers on at least one programme between the early 1970s and 1989; and again between 1992 and 2004. As you implied, that accounts for much of ITN's history, so quite where Nicky gets the idea that the introdution of voiceovers signalled a move towards Americanisms, I don't know.
Perhaps I should have utilised the word "re-introduction" rather than "introduction" in that original post! As you both rightly mention, ITN has been using voiceovers on bulletins for most of its existance - but I must point out that I was writing my post with the 1990s-era ITN in mind. As we all can view from watching ITV News programmes from that time and reading the relevant newspaper articles, ITN was becoming increasingly influenced by the presentation of American cable news networks - NAT 1992 being a real case in point: the "cable news network"-style studio, the single anchor, the beginning of a more "human" editorial stance (that last aspect didn't become obvious till later, but the seed is there in the 1990s bulletins).
The
re-introduction
of the voiceover in 1992 was, for me, only a part of that move towards the US way of presenting the news. The whole manner in which it is spoken feels more CNN than the 1970s/1980s voiceovers. The language is more or less exactly the same as the voiceovers of before - but the enunciation and emphasis on words definitely feels as if it comes straight from the states. ("From the
headquarters
of ITN"... "the
NEWS
"... and so on.)
Then again, one might argue that ITN has modelled itself on American TV news since it began, voiceovers included. But how anyone can argue that the 1980s BBC and 1990s ITN voiceovers sound uniquely British is beyond me - the entire manner of speech and enunciation is straight out of the US.
Sorry for any confusion... and sorry if none of what I've written makes sense.