Ivan was joined on the Hard Shoulder today by a man who has, in his own words, drawn a line in the sand.

He is a freelance travel writer, who has been troubled for some time by the issue of climate change, and he has made the decision to stop flying as part of his job.

Michael Kerr told Ivan why he felt the need to do what he could to reduce his carbon footprint, though he has no interest in 'flight shaming' as others do.