Subject to subsection (2) below, nothing in this Act shall affect any rights of the mayor and commonalty and citizens of the City of London or of the Lord Mayor of the City of London for the time being with respect to the stamping or sealing of weights and measures, or with respect to the gauging of wine or oil or other gaugeable liquors.

A person using weighing or measuring equipment within the City of London shall not be required to have that equipment passed or stamped by more than one authority.