I think the problem in this country is the beyond all reasonable doubt. And innocent until proven guilty.
By introducing the story of the table leg and the consultant coroborating its possibility, they introduced reasonable doubt. It was a reasonable doubt (albeit completely unlike) so a jury cant convict whether they think he did it or not.
This in addition to the fact the defence dont have to prove his innocence, means the defence can completely ignore any element that suggests his guilt. They dont have to provide testemony why he didnt call an ambulance.
Thats why youve got this ridiculous case where its bloody obvious hes giilty but he cant be convicted
There is an argument that some crime we should change the judicial system from innocent until proven guilty to guilty until proven innocent.
Or alternatively introduce a not proven verdict, this would keep the burden on the prosecution to prove the case but also place burden on the defence to prove innocent. sentencing could then be at the discretion of the judge.
Both of these options would reduce the likelihood of a guilty man being declared innocent. But they would also probably raise the likelihood of an unfair conviction. The question is have we got the stage that its become so hard to convict its a justifiable risk