Gavin Plumb, the man accused of planning to kidnap and murder This Morning's Holly Willoughby, has pleaded not guilty in a pre-trial hearing at Chelmsford Crown Court today.The 36 year old security guard from Harlow is facing charges of soliciting to commit murder and incitement to kidnap.The alleged plot to harm TV star Holly was said to have taken place between October 2 and October 5. Plumb was charged on October 6 and has been kept in custody since then. He appeared in court today for his plea and trial preparation hearing.