Ask your bank about their ethical lending and investment policy and pressure them to improve it. If you can, switch your business banking to an ethical bank that doesn’t invest in carbon intensive fossil fuels.
Switchit can tell you how green your current bank is and suggest alternatives.
Consider investing in renewable energy projects. For example, FEAT in Australia is a fund that works with artists to make investments into renewable energy projects – let’s talk about setting up something similar in the UK!