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From what I hear his confession is a triumph of legalese, he's admitted to an attack but not that one now.
It really would'nt be that difficult to disprove his equivocation, there can't be that many bars in the area all you need is statements off all the bar staff that they even had no trouble that night or no trouble with Sankey by a process of elimination the last disputable incident is his.
I've spoken to a good friend of mine who is related to them (the Shields) he's passed the message on.
Could be an interesting new year for a certain somebody....