I was speaking to a senior manager from a major company last week, a gent of a certain age on the brink of retirement, and I asked when he thought sustainability would be truly mainstreamed. And his reply?

“When your generation is in charge.”

Scary thing is, it already is. Many of the most powerful in our country are my age or thereabouts. And many aren’t covering themselves in glory, are they George Osborne?

Maybe the Millenials, who don’t know life without kerbside recycling, will make the leap. Or my kids generation where hybrids, electric vehicles, wind turbines and solar panels are perfectly normal, or…