Star Trek comic strip advertorials for products that every Trekkie had to have. Most of these ads probably appeared in more than one publication and were reprinted in Star Trek: The Classic UK Comics.
[#76] 14 August 1976
Battle Picture Weekly
IPC Magazines Ltd.
Advertising Dinky die cast toys, the U.S.S. Enterprise Model No. 358. According to research by Shaqui Le Vesconte, the Dinky ad was illustrated by Gordon Archer.
[#1203] 12th November 1977
Tiger and Scorcher
IPC Magazines Ltd.
Advertising Dinky die cast toys in full color, the Klingon Battle Cruiser Model No. 357 and U.S.S. Enterprise. This Dinky ad also appeared in Battle Picture Weekly 29 October 1977 and Battle Action 26 November 1977.
#13 22 March 1980
Look-in
Independent Television Publications Ltd.
Advertising Star Trek: The Motion Picture and The Great Weetabix Adventure including action cards front and back, and cereal box cut-out models. This Weetabix ad also appeared in Doctor Who Magazine #24 Mar 26th 1980 and TV Comic #1475 21st March 1980. Illustrated by Gordon Archer.
#173 Summer 2013
Star Trek The Official Magazine
Titan
Advertising Haynes Owners' Workshop Manuals for the U.S.S. Enterprise and a Klingon Bird-of-Prey with a comic strip featuring Scotty. A related ad was also published as a GIF. The US edition of the magazine was issue #46 with the same cover and a Previews Exclusive photo cover. The script for the ad was written by Christopher Cooper, art by Will Sliney, lettering by John Workman, and coloring by Digikore.