Last Friday we published the first three proposals in a new series in which we’ve asked leading thinkers, from politics, business and green groups, to set out their one big manifesto idea for the next parliament – the one they think will make a big impact in creating a greener Britain.

Today’s three ideas come from Chris Huhne, the Aldersgate Group and, in a joint proposal, the Robertsbridge Group and Greenpeace UK. Read more