It's hard to tell: the problem with joint enterprise (as was) is that it depends on second guessing. But if the bloke with the bottle had past history, or had been heard making racist remarks, or had threatened someone with a bottle then, yes, the guy in grey could well have been charged - it...
He could have been charged under joint enterprise law - and a couple of years ago, he probably would have been. Someone I knew got banged up for this some years back, when a mate of his smacked someone with a bit of fencing.
A supreme court ruling has changed all this though. Last year, it was...