my son charged with gbh s 18, he heard screaming and banging upstairs (we live in a block of flats)he went to see what was happening, grabbed a hammer on the way,he thought someone was being attacked as it was a girl screaming when he got there found man who lives in the flat with his girlfriend banging on door the girlfriend was inside my son offered assistance and the man attacked him he accidently hit the man on the head with the hammer causing a cut which needed one staple,he also hit him delibratly on the leg with the hammer this was to stop the man kicking him down the stairs,after the fight was over my son called ambulance and police he is going to trail as he said he did not mean to harm anyone and that he only used the hammer in self defence the couple were having a domestic disbute at the time what are the chances of him being found guilty son is disabled blind in one eye never been in trouble before