Boris Johnson: State of global trade will be at forefront of G7 talks
He also said he would tell US President Donald Trump to pull back from a trade war with China that is already destabilising economic growth around the world.
Johnson and Trump are due to meet on Sunday (August 25) for what are expected to be positive talks on their countries' future bilateral trade relations and Brexit, as well as trade policy on China.
Asked if he would be telling Trump not to escalate the trade war with China, Johnson said "you bet".
Speaking to reporters on arrival in the southwestern French city of Biarritz, Johnson said one of his priorities for the summit was "clearly the state of global trade".