[W. Knight]

Transdiffusion has an article (transdiffusion.org ) on Carlton's unused logo (when they were bidding for the London Wekday region) that mentions an unused ident where a CGI man walks onto camera and throws down a film reel revealing a blue line and then the words "Carlton Television" appear.

The article gave me the impression it was seen in news reports about Carlton, but I've never seen video of it.

It's on ITN in announcing franchise results:
youtu.be 
If you listen closely, that seems to be from a production reel for Carlton at the time (as there's a male voice introducing the company). Not too sure what it'd sound like in production endcaps...

In comparison, the Transdiffusion reproduction of it was in wrong colours and a wrong serif, but it had been recognized as the first Carlton logo since then...