(1) Every person who drives or attempts to drive a mechanically propelled vehicle in a public place while he is drunk shall be guilty of an offence under this section and on summary conviction thereof shall be liable, in the case of a first offence under this section, to a fine not exceeding fifty pounds or, at the discretion of the court, to imprisonment for any term not exceeding three months or to both such fine and such imprisonment and, in the case of a second or any subsequent offence under this section to a fine not exceeding one hundred pounds or, at the discretion of the court, to imprisonment for any term not exceeding six months or to both such fine and such imprisonment.
(2) Whenever a person is convicted of an offence under this section the court by whom such person is so convicted shall make an order (in this Act referred to as a consequential disqualification order) declaring such person to be disqualified for holding a driving licence during such period as such cou