Chapter 1 of Part 2 of the Levelling-up and Regeneration Act 2023 (c. 55) provides for the establishment of combined county authorities for areas consisting of the whole area of a two-tier county council, plus a minimum of one or more whole areas of another two-tier county council, unitary county council or unitary district council in England. Combined county authorities are bodies corporate which may be given power to exercise specified functions.