Re-design all tax systems that we control around the 'polluter pays' principle.

In order to discourage negative environmental behaviour we should tax polluting behaviours. In Wales we do control some tax revenue streams, and could possibly re-design them to incorporate environmental elements. We could also introduce new taxes or payments for negative environmental behaviour; e.g. road pricing, pay as you throw, home energy use. Redesign business taxes as well as personal taxes. Of course we must protect the least well off, I'm thinking especially of those who are experiencing fuel poverty. The tax could (should!) be ring-fenced to help fund insulation schemes, public transport schemes, re-localisation schemes, etc. These schemes should start before the tax change takes place.