Definition
Where a person gives permission / consent to suffer harm or takes the risk voluntarily and therefore cannot complain of the injury that occurs
There must be valid consent
Must be real consent, V has given permission (slingsby)
Only for common assault
D cannot valid consent to ABH as not in public interest (AG’s ref no. 6)
Only available for assault or battery and not for s47, s20 or s18 (Brown)
Exceptions
Consent does not need to be given in the same way
Surgery, horseplay - honest belief V consented to rough play (jones), contact sport - within the course of play (barnes)