The G7 summit was a "difficult" occasion, Theresa May has told MPs, with "strong disagreements" between the US president and other world leaders, BBC reported.

While there was "common ground" in some areas, she said she was "deeply disappointed" by US trade policies.

Pledging to uphold the rules-based order, she said disputes could not be solved by nations taking "unilateral action against their partners".

Jeremy Corbyn said Donald Trump was to blame for the summit's "failure".