To certain exceptions mentioned, a person's consent is irrelevant and cannot prevent criminal liability for an offence if ABH was intended and/or caused. It's not in the public interest that people should try to cause, or do cause, each other ABH for NO GOOD REASON (eg sexual fulfilment). In some cases, there may be good reason and CA was clear when emphasising that the above rule did not affect the accepted legality of certain situations in which the consent of V is legally relevant and renders the conduct in question unlawful