Bleary-eyed passengers boarding some early flights at Birmingham, Bristol and Belfast airports this morning will be confronted with a colour-coded sticker rating the damage they are doing to the planet. Europe's biggest regional airline will today unveil what is claimed to be the world's first aircraft "eco-labelling" scheme. Flybe, which has an extensive domestic and European network, says "Passengers will then be in a position to decide, on an informed basis, whether they want to carbon-offset that journey". The airline has also introduced an offsetting scheme.