?Politicians are all too well known for talking a lot of hot air, so the country is bracing itself for a touch of global warming as the autumn party conference season kicks off.

According to the boffins at Royal & SunAlliance, bike-riding Conservative leader David Cameron is set to be the greatest culprit as his set piece speech will be taking place at Blackpool’s Winter Gardens – the party conference venue which emits the most hot air, due to its size and age.

Perhaps some of the Tory Big Beasts will be suffering from the same problem?