Important for AR and MR elements of the crime to 'match. Ie D should not be guilty of a crime unless he intended to do it or at least saw risk which they took anyways.
Theft
Follows this principle as D must intend to permanently deprive V
S18 OAPA 1861
Follows this principle as D must intend serious harm
UAM
Doesn't follow principle as offence does not require any recognition from D of killing or even harming V
S20 OAPA 1861
D must cause GBH or wounding, but needs to intend or see risk in some harm
Murder
Doesn't follow principle as to be found guilty, D must unlawfully kill someone, but can be guilty with implied malice aforethought, meaning D only needs to intend to cause serious harm (R v Vickers)
