1. Eat a largely plant-based diet, with healthy portions and no waste
I often eat vegetarian. DS is picky though, we'd probably buy less and waste less if he wasn't. Hopefully that will improve.
2. Buy no more than three new items of clothing per year. (Unlimited second-hand clothing allowed.)
Probably already do that for me. DH buys new but only when he absolutely has to. We buy new for DS, but I rarely find anything for him in our local charity shops, they don't really do childrens clothes.
3. Keep electrical products for at least seven years
We generally keep things until they stop working. Don't have the money to replace things without a good reason.
4. Take no more than one short haul flight every three years and one long haul flight every eight years
I've not been on a plane for well over ten years.
5. Get rid of personal motor vehicles
We've always had second hand and run them into the ground. It would be hard to visit family with no car.
6. Make at least one life shift to nudge the system, like moving to a green energy, insulating your home or changing pension supplier
We moved to a green energy supplier, our home is insulated. My pension is sorted by work.