The UK Greens' policies actively damage our response to climate change.
First, they oppose nuclear power, the lowest carbon-density energy source we have (on some measures tied with wind), and by far the lowest density source that can supply base load. Proven in practice, countries with the highest nuclear mix (e.g. France) are the least energy-intense rich countries, while Germany, which just gave up nuclear, is seeing its carbon emissions rising rapidly.
Second, they are sceptical of carbon trading and offshoring of carbon-reduction actions. Given the same money, the Greens would rather spend it on a UK project that removes a small amount of carbon than one a developing country that removes a lot. Ideology above impact.
So maybe I disagree with their methods, but at least they're focused on the issue, right?
Not that either. At their last party conference, about 9 of 61 motions were climate-related, or about 9 of 40 excluding procedural items. That's not a party serious about tackling an urgent civilisational emergency.