Thanks for all that information, really interesting.
Personally I always though the monitors in the desk were just that - studio monitors, with some sort of prompting tool from the gallery on the side. Obviously they still are just monitors in many cases such as with Newsnight (and rather clumsy at that), but the keyboards always threw that concept a bit for me - this explains it all!
Personally I don't like the laptops on the desk surfaces - think they look so contrived and so effortfully 'cool' and modern.
And there is something very unsatisfactory about a newsreader looking at a monitor that we are looking at the back of, reading material off it.
I'd be listening to the radio or reading Ceefax if I wanted material churned out to me like that.
Also on the wide shots on Six with George and Sophie it looks like the laptops, dominant in shot, are competing with the camera for the newsreaders' attention - they look ridiculous I think.
http://thetvroom.com/images-bbc-one-news/news-03/six/end-1a.jpg
www.thetvroom.com
Go back to the monitor under the desk method - that way when news breaks the newsreader looks like they're reading from paper on the desk as if the information just 'magically' appears typed out in front for them. Looks much more professional that churning it off a screen - maybe we're just so used to the paper method, still prefer it though...
RTÉ News in Ireland still uses the monitor-uder-the-desk method, with keyboards & mice (not wireless

). The monitors are white for some silly reason:
http://i2.photobucket.com/albums/y37/RTE1TV/Una-Monitor.jpg
Usually, as pictured, in this end wide shot there's just a satellite dish logo on the screens making one wonder if they ever even use the system!
They first introduced this system in late 1999 it seems somewhat later than the BBC, again underneath a glass panel:
http://thetvroom.com/images-rte-one/rte-one-news/01-1-start.jpg
www.thetvroom.com
I'm dreading the next makeover as they're gonna copy the BBC to a tee with those stupid laptops!