To get things in perspective........
Imagine a column of atmosphere from ground level up to 1 Kilometer in height. Most of that is Nitrogen, Oxygen and a little Argon. The minute remnant includes Carbon Dioxide.
Taking ALL the Human UK output of CO2 in that 1 Kilometer column and you are looking at a slice not even as thick as a human hair! That is ALL Power Stations/Ships/Cars/Houses/Lights/TV/Computers/Aeroplanes combined.
Bit of a farce isn't it?