Devlin - society will disintegrate if morals are not upheld. Common morality should be reflected in the law. To be decided by the ‘right minded person’ test.
e.g. GIBSON – convicted of outraging public decency and BROWN – “pleasure derived from the infliction of pain is an evil thing”
Hart - law should only intervene with morality where it causes harms to the society.
E.g. CIVIL PARTNERSHIP ACT 2004 and SAME SEX MARRIAGE ACT 2014