No doubt someone will chip in and say the sentence of 4 years in jail seems harsh,
but I bet the defendant, anyone that knows him, and anyone that becomes aware of this incident,
will think long and hard before doing something similar in the future
Sentences handed down the Courts are there not only to punish the offender,
but also to act as a deterrent to others - something which often seems to be lacking in the UK these days ( IMHO ).