The miscarriage of justice is not the excessive force charge. It is the fact the initial aggressor was not charged with assault. His injuries would not have occured if he had not stalked and assaulted the woman in the first place. Wearing a balaklava to attempt to conceal his identity suggests a premeditated act to do more than just argue with someone. She should appeal this ruling.

A Sheriff, ie law enforcement officer, acted as judge. Did I read this correctly ?

Is pepperspray legal to use in self-defense in the UK ?