Decision a blow to campaigners, who say the ads gave Saudi Aramco unearned climate credibility.

UK’s first parliamentary debate on the issue drew comparisons both with tobacco industry tactics and the industry's now widely accepted ad ban.

Labour's Jacob Collier warns parliamentary debate of "coordinated strategy" by oil companies to delay climate action.

Green policy is under threat from corporate lobbying, right-wing parties and media and U.S. interference.