Yes, we know that the best thing we could all do for the environment is buy nothing at all, ever. But we're just not sure that's realistic. This opinionated guide is for London locals and visitors alike who want to enjoy the capital while eating, drinking, shopping and playing as sustainably as possible. From zero-waste supermarkets to ecological gardens, recycled clothing brands to vegan cafes using local produce, London is full of lovely small businesses trying to make a difference. Go out and support them.