It sounded “alarm and concern” at the temperature already rising by 1.1C and admitted the crucial $100 billion funding needed to support developing countries to quit fossil fuels is not likely to be met, suggesting the need to “revisit and strengthen” proposals.

British Prime Minister Boris Johnson is heading back to Glasgow today to urge world leaders to “pull out all the stops” in the final three days of talks as activists express anger at the perceived failure of countries to agree to more radical measures.

Live updates have now ended.

CEO Pilgrim Beart told Newsweek the plans were “more ambitious in theory than in practice” and that the industry will have adapted largely away from petrol cars by 2040 anyway.

Ahead of his return to Glasgow, Johnson said that countries must “pull out all the stops” from now until Friday.

Thunberg has been protesting for several days outside the COP26 venue in Glasgow after accusing attendees of “greenwashing” while walking out of an event last week.

CEO María Mendiluce told Newsweek that she wants governments to “hear the call of hundreds of companies” pushing for measures to tackle global warming.

The seven-page document focuses on the “urgency of action” needed to get richer countries to support poorer nations to ditch fossil fuels in the next decade with $100 billion - something countries have so far failed to agree on.

He boarded a train at London Euston just moments ago, Downing Street confirmed.