Watkins Tower has now been separated into two building entries. One for the cancelled design, and one for Watkins Folly.
https://skyscraperpage.com/cities/?buildingID=41047
https://skyscraperpage.com/cities/?buildingID=9233
This makes it possible to see the full-height tower design along with other cancelled buildings in London -
https://skyscraperpage.com/diagrams/?searchID=103558437