I've looked at some comics published by 'Clearmark comics' in the past...
Tom & Jerry comic, issue 2, June 1990, 80p
Denis Gifford's ACE newsletter for Jan/Feb 1991 (#120) records this as the final issue
Popular fairy tales here
Were Bears here
The world of Wym here
Rupert here
Tom and Jerry here
Cookie here
Henry's cat - fun to cook here
They published at least one other title though...Tom & Jerry comic. Michael Carrol (here) records it at lasting 7 issues. So, here's the start of a covers gallery for Tom & Jerry comic.
Now updated with the cover of issue #7
Tom & Jerry comic, issue 1, May 1990, 80p
Tom & Jerry comic, issue 2, June 1990, 80p
Tom & Jerry comic, issue 3, July 1990, 80p
Tom & Jerry comic, issue 4, August 1990, 80p
Tom & Jerry comic, issue 5, September 1990, 80p
Tom & Jerry comic, issue 6 October 1990, 80p
image not to hand - can you help?
Tom & Jerry comic, issue 7, November 1990, 80p