Oil companies deny that joint climate pledge is lip service

Commitment to setting a carbon price dropped and green groups remain critical that the statement amounts to little more than hot air

The heads of 10 major oil and gas companies have denied they are paying lip service to climate change initiatives while conducting business as usual.

Eight of the 10 companies' CEOs met in Paris on Friday and issued a joint statement saying they would "play their part" in battling climate change, ahead of the United Nations climate summit which opens in November.