London Government Act 1963

7 Subject to the provisions of paragraph 16 of this Schedule and to any provision made by an order under section 84 or 87 of this Act—

(a) the functions of the council of any county or county borough under the local enactments relating to the metropolitan watercourses shall instead of being exercisable by that council be exercisable by the Greater London Council, and references in any such enactment to any such council shall be construed accordingly ;

(b) the local enactments relating to so much of the tidal Thames as lies within the existing county of London shall apply to the whole of the tidal Thames (as described in the Table in paragraph 15(1) of this Schedule), and in those enactments references to, or which are to be taken as references to, the county of London shall be construed as references to the London excluded area ;

(c) no functions relating to land drainage, flood prevention and the like matters shall (subject to paragraph 16 of this Schedule) be exercisable with respect to the tidal Thames by any authority under any local statutory provisions other than the enactments mentioned in sub-paragraph (b) of this paragraph or by virtue only of section 83(3) of the Act of 1930.