Under s.54(2), it need not be sudden, this means if there is a time gap between the qualifying trigger and the d losing their control the d can still rely on loss of control (R v Dawes). However, the bigger the gap the less likely the d actually lost control and it is more likely to be premeditated, If it shown the d has a reasonable amount of awareness then this will result in them being unable to rely on LOC as illustrated in R v Cocker. Also, acts of revenge will result in the d being unable to rely on LOC as per s.54(4).