A Bill to establish the right to breathe clean air; to require the Secretary of State to achieve and maintain clean air in England; to involve the UK Health Security Agency in setting and reviewing pollutants and their limits; to enhance the powers, duties and functions of various agencies and authorities in relation to air pollution; to establish the Citizens’ Commission for Clean Air with powers to institute or intervene in legal proceedings; to require the Secretary of State and the relevant national authorities to apply environmental principles in carrying out their duties under this Act and the clean air enactments; and for connected purposes.