Non-Fatal Offences Against the Person Act 1997
Assault causing harm.
3.— (1) A person who assaults another causing him or her harm shall be guilty of an offence.
(2) A person guilty of an offence under this section shall be liable—
( a) on summary conviction, to imprisonment for a term not exceeding 12 months or to a fine not exceeding £1,500 or to both, or
( b) on conviction on indictment to a fine or to imprisonment for a term not exceeding 5 years or to both.