Gilberthorpe, 54, said he was sitting across the first class aisle from the couple and saw nothing inappropriate.Leeds was wearing a white pantsuit, he said, while Trump was wearing a suit and cuff-links, which he gave to his British flight companion.
He gained wide recognition when Mad Men began during July 2007.
The story concerns a group of friends whose lives are changed as the couples in the group begin to have children.
He has a recurring role in the situation comedy The Increasingly Poor Decisions of Todd Margaret, as the servant of socio-pathic billionaire Dave Mountford (Blake Harrison).
The man says he was sitting across from the accuser and contacted the Trump campaign because he was incensed by her account — which is at odds with what he witnessed.
“I have only met this accuser once and frankly cannot imagine why she is seeking to make out that Trump made sexual advances on her.