Marks and Spencer has investments in Israel and does business with the Israeli military-industrial complex (specifically, it sells goods made in the illegal settlements). It seems like a sensible target by your criteria, so I'm not sure why including it in a boycott campaign would creep you out.
--
"I had never understood why Socialism need imply the arraying
of oneself in a green curtain or a terra-cotta rug, or the
cultivation of flowing locks, blue shirts, and a peculiar cut
of clothes." -- Isabel Meredith, _A Girl Among the Anarchists_ Voyou Desoeuvre <http://blog.voyou.org/>