May 27 - The following are the top stories on the business pages of British newspapers. Reuters has not verified these stories and does not vouch for their accuracy.
BISMARCK, N.D., May 26 Donald Trump, the presumptive Republican presidential nominee, promised on Thursday to roll back some of America's most ambitious environmental policies, actions that he said would revive the ailing U.S. oil and coal industries and bolster national security.
* Some buyers say Arab Extra Light price uncompetitive vs UAE oil
LAGOS/YENAGOA, Nigeria, May 26 Nigeria's government needs to address grievances in the oil-producing Niger Delta, its oil minister said on Thursday, hours after a Chevron source said a militant attack had forced it to shut its onshore operations in the restive region.
BISSAU, May 26 Guinea Bissau President Jose Mario Vaz named Baciro Dja as prime minister late on Thursday, according to a presidential decree, sparking protests from political opponents who said the appointment was unconstitutional.
TORONTO, May 26 Canada's main stock index edged slightly lower on Thursday, including losses for resource stocks as oil and gold prices dipped.
NEW YORK, May 26 U.S.-based stock funds recorded $4.8 billion in withdrawals during the week that ended May 25, Lipper data showed on Thursday, adding a fourth straight week of outflows for the investments.
* U.S. oil ends lower after hitting $50 a barrel (Updates with U.S. markets' closing levels)
TORONTO, May 26 Canada's biggest banks warned on Thursday of further losses from oil loans in coming quarters as energy companies struggled to repay loans, even as growth in wealth management and retail banking helped the banks report better-than-expected second-quarter earnings.
CARACAS, May 26 Venezuela's opposition-led National Assembly on Thursday warned that contracts signed between the leftist government and foreign companies without lawmakers' approval would be null.