1, create a secular state. No religion in schools, no faith schools no holidays for religious events. Just an extra allowance in annual leave requirements for employees to take days off for such things or not if they are of no faith.
2, Nature initiatives to encourage wildlife. Every council to ensure all appropriate small green spaces (verges, odd little patches) and a section of every park is sown with wild flowers and planted with native trees especially those that bear berries. This saves money because the grass/flowers only need a once yearly cut.
3. No public lighting between 0100 and 0400 on one night every month. Let us have a chance at least to see the stars.