On the Pro Forma Advisors website, Project Experience page, a pin on the world map is for "Universal Studios UK Feasibility" and the pin's image shows The London Resort. The client listed is London Resort Company Holdings, so unless it is a mistake, this confirms that at least at some point Universal was potentially involved in the plans for a theme park in Kent.
Source: https://www.proformaadvisors.com/home/theme-parks