[Stooky Bill]

They concurs with my memory - the 600 magazine was provided by GMTV while they were on air and Yorkshire after 9.25.

Some time later Yorkshire content was available 24/7 with GMTV having pages 640-649 at all times

I think by the end most ITV stations had text services on 600 but they weren't there from day 1. 

The first I saw was that summer when I was down in the Westcountry area. I think theirs might have been done in house, whereas the other regions used Intelfax. Carlton/LWT and GMTV were late 93 I think 

Channel 4 and 5 had theirs too on p400 and p500 respectively. 4Tel was very minimal on day 1 and grew a bit although nothing like what they had pre-1993. Channel 5's was there before they even launched with transmitter details

None of those were part of Teletext (capital T) and were added with subtitles at the TV station, hence they had different headers