Well now, allow me to spoil the argument with facts. Aviation produces about 2.5% of global carbon emissions. Shipping slightly more. Both are dwarfed by passenger road travel (15%), which is much worse that road freight, and agriculture (26%). So it is not accurate to state that "cheap flights are killing the planet." That isn't to say that we shouldn't try to reduce those emissions as we should be doing in other sectors. I've been on one or two short-haul trips by air per annum (pandemic years excepted) since we started going to Spain and Italy in 2010 and I'm not intending to stop or start feeling especially guilty any time soon. By the way, if global pet food production was a country, it would be the 60th worst emitter of greenhouse gases, worse than the majority of countries. And guess which bunch of pets is responsible for, er, the lion's (wolf's?) share of that...

And why "cheap" anyway? What was that I heard about Rishi flying from Southampton to London in a private jet? Leave my holidays alone!