[Michael Kenchington]

A mess indeed:

Judging from the blurred background, I believe the TTTV endcap Si-co posted was a later one - when they hurled the C3NE brand into the wastebin?

Possibly mine was a later example (late 1997), but this was still the “3” era - the main 3 symbol only appeared on local shows, but the 3s in the background were normally present on the endcaps of YTV’s networked shows, so I assume the same would have applied to TTT.

Yorkshire started to use the Channel 3 Yorkshire branding on promos from 2nd September 1996, but continued to use its 1994 idents, endcap and clock for the time being before eventually becoming Channel 3 Yorkshire towards the end of October 1996 in which the long version of the ident features the initial revolving gold chevron giving way to a large gold ‘3’, before the chevron returns again and using the same background as Channel 3 North East.

Also, Channel 3 North East still legally had to be referred to as Tyne Tees Television IMO, which meant the words "TYNE TEES TELEVISION" appear at the bottom of the screen of the C3NE ident.

EDIT: The Tyne Tees endcap from the C3NE era also appears on a 1997 UK VHS release of Newcastle United NUFC 1996 - 97 Season Review: Road to Europe as well in which the text reads "A Tyne Tees Television Production for Newcastle United Football Copany Ltd" underneath with "Copyright 1997" appearing below.