Which are the largest anti-climate oil&gas companies?

Exxon, Chevron, & Toyota are the largest anti-climate lobbyists. This according to the London based organization Influencemap, that studies the influence of lobbyists on government decisions. The mentioned companies are accused of being the most active to condition climate policies and strategies that are taken at international conferences on global warming, such as the one being held in Glasgow. In the report, released shortly before the start of the conference, the two largest American oil companies are judged the most influential companies in “manipulating governments” to direct them to take “incredibly dangerous paths” in the approach to solutions to climate problems.