UAM - 2) The act must be a dangerous one
Objective test - must be an act that a sober and reasonable man would regard as dangerous (Church).
Does not matter that D did not realise the risk that his act may cause some harm.
'Some harm' = need not be serious harm, if reasonable and sober person realises act may cause some injury then that is sufficient.
Does not matter if D did not realise this (R v Larkin).
Act need not be aimed at V or any person providing that some harm was realised.
No need for particular type of harm to be foreseen by sober+reasonable person.