consent must be valid - only valid if the victim understands the nature of the act and know exactly what they're consenting to
consent must be valid - victim must have the capacity to consent - children and those suffering from a mentalillness may not be able to give validconsent
Burrell v Harmer
consent must be valid
Gillick v West Norfolk
under 16 can consent to medical treatment if 'Gillick-competent'
if medical staff are acting in the patient's best interests the absence of consent is not unlawful
consent must be informed - victim must be informed as to the identity of the defendant and the nature and quality of their act
R v Dica
consent must be informed, cannot consent to a risk of infection
if the D has obtained V consent by fraudulent means, does not always render the consent invalid
R v Tabassum
consent must be real and not fraudulent to succeed
R v Richardson
fraud will only invalidate consent if the V is decieved as to the identity of the D or the nature and quality of their act
exceptions - consent to surgery if level of injury is being carried out to their benefit, adults can consent to tattoo or piercing as well as branding (Wilson)
Barnes
participation in sport gives rise to implied consent but an incident which takes place outside the rules of the game will not be considered to have been consented to
R v Coney
a fight cannot be consented to even when both parties agree to it
AGs Ref No6
consent is never a defence to streetfighting
mistaken belief - where D genuinely, but mistakenly, believes that V is consenting, then consent is a defence
R v Jones & R v Aitken
consent is a defence to injury through horseplay
R v Brown
consent is never a defence to sado-masochistic acts
R v Donovan & R v Slingsby
where person consents to being touched there is no battery