Hello, I am a solicitor with 20 years experience. I will try to help you with this.
I hope your grandson had a solicitor in the police station. If not, he should get one now. Is the allegation made by the other botyabout the golf club incident or about something more recent? How old is your grandson?
I think it unlikely that you would be able to bring any action in the event your grandson not being charged. All that means is that the police or the CPS have taken the view that they probably can not prove beyond reasonable doubt that your grandson is guilty, it is not a finding that he did not do the thing alleged by the other boy.
It was about the golf club incident, the police officer who took the complaint from the other boys father told him that it would be thrown out because of what witnesses said, but he insisted on making the charge. The other boy said my grandson who was eleven at the time of the incident and is thirteen now hit him on purpose with the club and knocked him unconscious and when he came round my grandson was plying football with his other friend. The parents of the lad whose garden they were playing in said that was a lie. My grandson has had to endure two years of persecution from this lad and his father (the policeman) and it has effected him not only emotionally but made him loose confidence in himself. Awaiting your reply with interest.
What stage is this at procedurally? Has he been charged, has there been a trial or is he on police bail?