Some URLs are identifiable
As the Stalker does not access the sites instantly, perhaps the ICO might like to ask Stalkstalk, where they store the information collected from the Stalkstalk’s customers and as those URLs contain information identifiable to an individual, how do they justify that data processing without permission.
Also perhaps the ICO could get Stalkstalk to explain how I can identify the Stalkstalk customer the URL was used by, from some of the URLs. The URLs contain information specific-to-specific users of my site.