5In section. 16A of that Act (which provides for certain offences under other provisions of that Act to be punishable on summary conviction by a fine not exceeding £100 or £20 a day in the case of certain continuing offences) for the words " one hundred pounds " in both places where they occur there shall be substituted the word " £400 " and for the words " twenty pounds " there shall be substituted the word " £50 ".