Mass membership growth means something real is happening in the Green Party in England and Wales. People - who I call the watermelons, as they're red inside and green outside - are choosing commitment to that party over despair. But, critically, movements can outrun institutions.

In this video, I set out the opportunity facing the Greens, the risks they must avoid, and the hard truth that values alone are not enough. If plausible, deliverable, policy does not follow, and fast, the consequences will be severe.