LONDON - Britain said on Thursday it would take "extremely seriously" the findings of a United Nations report which says British military ally Saudi Arabia could have committed crimes against humanity in Yemen.A United Nations report on Wednesday said the Saudi-led coalition has targeted civilians in Yemen, documenting 119 sorties "relating to violations of international humanitarian law".British foreign office minister Tobias Ellwood said he had not yet received the report officially from the UN but that he had seen some of its contents."I will take the report extremely seriously, this absolutely must be the case, and I commit to sit down with the Saudi Arabians at a very senior level ... and discuss the allegations," Ellwood said. "We must do this in a methodic way which is based on evidence."In March, a Saudi-led coalition began a military campaign in Yemen to prevent Houthi rebels, whom it sees as a proxy for Iran, from taking complete control of Yemen after seizing much of the north. The Houthis accuse the coalition of launching a war of aggression.