A security guard accused of planning to kidnap, rape and murder Holly Willoughby has told a jury the television presenter was “my celebrity crush”.

An undercover US police officer on Thursday told Chelmsford Crown Court he believed 37-year-old Gavin Plumb posed an “imminent threat” to the former This Morning Host.

Plumb shared a video of his “abduction kit” with the officer, referred to as David Nelson, and said he would use chloroform to snatch Willoughby, 43, from her home to…