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Do you have screenshots or videos or something?
There are certainly examples of TV Forum mock logos making their way onto official sites. The most notable has been Invent Meridian's mocks, his Challenge/Carlton hybrid logo appeared on the official Sky TV guide site, and his BBC One 1991/1997 hybrid logo appeared on a video for digital switchover, as a printout on old analogue transmitter equipment that was being switched off.
Do you have screenshots or videos or something?