Type of defence
Full defence so will remove liability from the D
Known
The C must have known about the precise risks involved, meaning they have an understanding of the nature of the actual risks
Will fail if the C was not aware, even if they should have been (Morris)
Free choice
C must have had free choice as to whether or not accept the risk (Smith v Baker)
Voluntary
the C must have been voluntary when accepting the risk or danger present to them (Haynes)