Any person who, without the consent of the appropriate undertakers, wilfully interferes with any works carried out in exercise of the powers conferred by this Act shall be guilty of an offence and shall be liable on summary conviction to a fine not exceedingF1 level 4 on the standard scaleF1 or to imprisonment for a term not exceeding six months or to both such fine and such imprisonment.

Any person who wilfully assaults, obstructs, impedes or hinders a person exercising powers conferred by this Act shall be guilty of an offence and shall be liable on summary conviction to a fine not exceedingF1 level 3 on the standard scaleF1 or not exceeding £20 for every day on which the obstruction continues, whichever is the greater, or to imprisonment for a term not exceeding six months or to both such fine and such imprisonment.