I take it TT were just Like Grampian and only broadcast Idents before news and Very important programmes?
Yes.
TTTV only ever showed the full ident:
1) Before the news
2) Burned-into programmes made by TTTV (right up to the end of 1992)
3) During the 1980s, before imported programmes (they stopped doing this around 1986).
4) First thing in the morning (and even then never linked from it into a programme! always IVC or This Morning trailer after).
I don't remember more than 2 or 3 occasions over 10+ years when they introduced a non-news programme with an ident+voiceover.
They did, of course, use static slides before programmes, but only post-1988 (before then they'd use IVC even if it was only a couple of seconds), and they did occasionally use the "ITV Drama" ident with voiceover (although generally not).
This changed overnight on 1st January 1993 when YTV was controlling things more.