I read in Sarah Vine's column in the Times today about an ASA ruling banning a poster which objectified women.
A poster for Tricketts, a door and window installation company, featured a topless woman whose breasts were covered by door knockers. Text stated "WE SELL BIG KNOCKERS Window Hinges Door Handles Window Handles ...".
Ruling here.
What I found interesting is that it only took 1 person to report this.
Therefore it is worth reporting things to the ASA (although I am aware that they are an industry self-regulating body and that the objectification has to be pretty overt for them to act).
I reported the Dr Pepper Status Takeover and am awaiting a reply to that.