In R v Bollom (2004) 2 Cr App R 6, the Court of Appeal held that, in deciding whether or not the injuries sustained were 'grievous', the jury should consider the effect of the injuries on the victim, taking into account the victim's age and health. You can also look at the totality of the injuries. This case concerned a baby with endless cuts and bruises which on their own would not have been enough but taken together, could amount to serious harm