The Secretary of State may vary any scheme, or revoke it.
Before making regulations or any scheme under section 105A above, and before amending or revoking the regulations or varying or revoking a scheme, the Secretary of State shall consult—
each sewerage undertaker which would be affected;
any sewerage licensee which uses, or removes matter from, the sewerage system of any such sewerage undertaker in accordance with a retail, wholesale or disposal authorisation;
the Authority;
the Council;
such other persons as the Secretary of State considers appropriate.
The Secretary of State shall publish each scheme he makes, and any such scheme as varied, in the way he considers best for the purpose of bringing it to the attention of those likely to be affected by it.