Regarding endcaps, Scottish television always put their end cap, with the word "presentation " after showing the "9 living colour " logo, at the end of the Sullivan's. But what was the policy at other companies?
Not sure exactly what you’re asking? At what point in the credits companies would mix out to a presentation slide? Or whether or not they used a slide at all?
As discussed above, most Aussie imports had “sponsor captions” as part of the credits (eg. airlines, hotels, furniture removals). Until about 1986 credits were usually shown in full by most companies complete with the sponsors and they inserted their presentation slide - if they used one - at the very end. Then the IBA stepped in and asked the companies to refrain from showing the sponsors as they were considered “too strong an advertisement” so the ITFC, or whoever edited the tapes, began removing the offending frames from the credits - but until all regions “caught up” to these episodes, they normally faded out of the credits early by mixing to a presentation slide, a holding slide or even a caption stating “The End”. Some regions such as Tyne Tees normally just faded out early. That said, many regions faded out early for timing reasons regardless of whether they needed to “hide” sponsor captions.
As for which companies used a “presentation slide”, I think most of them did in one format or another. Tyne Tees didn’t use one until the 1992 rebrand, and neither did Border as far as I know. Not every slide said “A xxxxx Presentation” - we’ve already mentioned Thames using “From Thames in Colour” until 1989 (sometimes also seen across the network on Cosgrove-Hall or similar productions). YTV’s simply said “Yorkshire Television” until 1989. Perhaps generally speaking the smaller companies didn’t bother if they were less brand-conscious, but Channel TV did, probably to cover up TSW and TVS pres slides (but were sometimes caught on the hop and both slides made an appearance).
Actually, I’m wondering if you are querying whether or not companies showed the Channel Nine (or Seven or Ten) logos? Some were known to cut away before these appeared (and I’ve seen examples of Central and Granada joining Sons and Daughters opening credits late - leading with sound only - to avoid the caption “7 Network Presents”) but there was no real pattern to this and seemed to depend on the TC on duty. Generally speaking, no ITV company seemed to have a strong aversion to showing the Aussie network logos - and the
ATN/Seven captions always remained intact on Home and Away.
CEEFAX SUBTITLES BEGIN SHORTLY