Star-Lord was a short lived sister title to 2000AD published by Fleetway from 13th May-7th October 1978. Notable for its consistent high quality (it was printed on far better paper stock than most of the company's comics) it had a good mix of popular chacters and storylines including Strontium Dog, Ro-Busters, Mind Wars, Planet of the Damned (issues #1-13), Timequake and, later, Holocaust. (issues #14-22). Like 2000AD and some of Fleetway's other titles, it had the central conceit of a fictitious 'editor' who acted as host to the comic; in this case, 'Star-Lord' himself, a galactic superhero. Readers were invited to become Star-Lord's agents on Earth (Starlord Trooper's) and to look out for evidence of alien infiltration and report back to him.
When Fleetway decided to cancel one of its two science fiction weeklies, Star-Lord was axed seemingly not because of low sales but simply because 2000AD was cheaper to produce. The title was merged with 2000AD, with Star-Lord's two most popular stories (Strontium Dog and Ro-Busters) crossing over, though Timequake later also returned for a brief run in 2000AD, too. Both Mind Wars and Holocaust, however, were conclusively wrapped up in the final issue (though Mind Wars did make a brief one-off return appearance in one of the Star-Lord Annuals).
There was also a Star-Lord Summer Special published in 1978, and there were three annuals published from 1980-1982.