These listings come from the Granada edition of the TV Times, the Liverpool Echo, and the Daily Mail (thanks to Richard Farrell)
As with the London edition of TV Times, the detailed synopses and credits of Year One shrink by the time of Year Two. Breakaway (shown Friday, 26 September 1975) has a "Big Season" tag (the promotional name of the ITV Autumn 1975 schedule). Apparently, Koenig is commander of the mission to Meta, and in the atomic explosion, half of the moon disintegrates. Although scheduled for 7:35pm, the premiere was actually an hour early, at 6:35pm.
The Last Sunset is the Sunday 30 July 1978 screening. According to this synopses, the series follows the occupants of a "stranded spaceship".
Granada was the first ITV region to show The Dorcons, on Sunday, 30 October 1977, here titled "Return Of The Dorcons" (the original script title, discarded before filming).
An unusual featured listing in TV Times, for Mission Of The Darians, Friday, 21 November 1975. (click for larger image)
A remarkable listing for The Metamorph from 1979 listing the character "Verdeschi (formerly Simon Hayes)". Simon was the character's names in early drafts, but this was discarded before filming. Note that Maya isn't listed!
Press coverage:
This new series from ATV leaves Star Trek light years behind
[Gerry] is a very honest man, whether talking about his emotions and his broken marriage, or his hopes for the series and his failures.
Say ATV: It must be seen to be believed
Thanks to Richard Farrell
Space: 1999 copyright ITV Studios Global Entertainment