Section 98: Interpretation of Part V.

In this Part of this Act—

• "functions" includes powers and duties; and

• "relevant authority" means—

  (a) in England ., the Secretary of State, a water authority, a county council, . . . , a district council, a London borough council, the Common Council of the City of London, the Sub-Treasurer of the Inner Temple and the Under Treasurer of the Middle Temple and, for the purposes of sections 91 to 93 of this Act, a sewerage undertaker; and

  (aa) in Wales, the Secretary of State, a county council or a county borough council and, for the purposes of sections 91 to 93 of this Act, a sewerage undertaker; and

  (b) in Scotland—