* This is now plain copyright law which raises questions, like if the manufacturer-in-question can stop Trolley from publishing those photos (while Trolley owns the copyright on the photo itself, there are de minimis considerations when it comes to the packaging design which is copyrighted by the manufacturer). It might pass fair dealing though.
The pictures are the real red flag. Unless a photograph is bundled with a cc license one always needs to assume somebody will need to grant permission for its reuse, and often that will be for compensation. Trolley should have known this.
It is entirely possible that Trolley were completely aware of this issue, but decided to ignore it and proceed anyway.
How often do we see the phrase "Ask forgiveness, not permission" get quoted on HN?
So then would not the simpler solution be to shut down UK operations and start up US operations via a US Legal entity?