Brexit secretary David Davis revealed his negotiating knowhow in 1988 book

The cabinet minister was working for sugar company Tate & Lyle when he came up with a blueprint for striking a sweet deal“This puts a premium on nerve,” wrote the author of a management textbook explaining how best to bluff your way through important negotiations. “A general air of visible determination and activity is extremely important to the perception-shaping exercise”.
It could have been bravado taken straight from Donald Trump’s 1987 bestseller The Art of